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I n d e x t o V t d u m e 3 3

J

a n u a r y t o

D

e c e m b e r

, 1928

f

G o a l A ge

McGraw-Hill

Publishing- Company, Inc.

Tenth Avenue at 36th Street

New York City ^

(2)

COAL AGE

W ith Which is Consolidated

The “Colliery Engineer’ and "M ines and Minerals’‘

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IN D E X TO V O LU M E X X X III

January to December 31, 1928

N O T E — T h e a r t ic l e s a n d r e f e r e n c e s in th i s iu d e x h a v e b e e n c la s s if ie d u n d e r le ad in g : s u b je c ts o r to p ic s , a s f a r a s p r a c t ic a b le , a n d s h o u ld b e s o u g h t u n d e r s u c h h e a d s , w h ic h , to g e th e r w ith a l l u n c la s s if ie d m a tte r , a r e a r r a n g e d a l p h a b e ti­

c a lly . I l l u s t r a t e d a r t ic l e s o r c u ts s ta n d i n g b y th e m s e lv e s a r e in d ic a te d b y a n a s t e r i s k ( • ) . A ll e d i to r ia ls a p p e a r u n d e r t h a t s u b je c t, e a c h h a v i n g i t s e x a c t ti tle . E ls e w h e re th e s u b je c t m a t t e r o f a n e d i to r ia l w ill b e f o u n d c la s s ifie d a n d m a r k e d ( e ) . M a n y ti tle s o f a r t ic l e s a r e a b b r e v ia te d , th e a i m b e in g to g iv e p r o m in e n c e to im p o r t a n t w o rd s.

F o llo w in g i s a l i s t o f t h e p a g e s in c lu d e d in e a c h is s u e o f th e v o lu m e , to g e th e r w i t h d a te a n d n u m b e r o f th e is s u e , f o r c o n v e n ie n c e o f r e f e r e n c e :

P a g e J a n . ... i . 72

J e b ! . 7 3 - 1 3 6

* • • ... 1 3 7 -2 0 0 A p r ... 2 0 1 - 2 6 4 M a y ... 2 6 5 - 3 3 2 ... 3 3 3 - 4 0 4

<Ju ly ... 4 0 5 - 4 6 4

£ 5 $ ... 4 6 5 - 5 2 4

S eP L * ... 5 2 5 - 5 8 4 5 c t ... 5 8 5 - 6 6 0

" ° v ... 6 6 1 -7 2 0 Dec- ... 7 2 1 - 7 8 4

A c c e s s o rie s , m in e , e x h i b ite d a t C in c in n a t i. * 3 7 1 A c c id e n t a. S e e a ls o S a f e t y

A p r il, 1 9 2 8 ... ... 3 9 3 A u g u s t. 1 9 2 8 ... 6 6 0 C a n m in e s s t r i k e s p a r k s ? ... 1 0 0 C a s tle g a te N o . 2 ( U t a h F u e l C o .) b l a s t ;

n o n e h u r t ... 5 6 9

C a u s e s , e tc . T u r n e r ... « 1 4 C e r ta in q u e s ti o n s F r a n k l i n m i g h t h a v e

a s k e d . ... * 2 4 ; c o r r e c tio n . 1 0 1 C ro w ’s N e s t P a s s C o a l Co., e x p lo sio n

.k i l l s 6 ... 5 6 8 D is c u s se d a t C in c in n a ti ... 3 4 2 E x p lo s io n s :

A m e r ic a n a n d f o r e ig n ... 1 8 4 C a u s e s i n v e s t ig a t e d in G r e a t B r it a in .

H a ll ... 4 3 9

D o lla r m e te r s u g g e s te d a s a i r i n d i c a t o r *3 3 1 E x p lo s io n s c h o o s e w h a t m e n r e f u s e

( e ) . ... 4 4 0

F o u r ... 3 8 5 H im le r, th r e e k ille d ... 7 7 0 M a r in e C o llie ry ... 2 9 6 M a th e r ( e ) ... 3 7 8 F e w e r in 1 9 2 7 . T u r n e r ... « 1 4 F ir e s . S ee F ir e s

H a u la g e , p r e c a u tio n s a g a in s t ... 7 6 4 H id d e n c o s t o f ... 3 7 5

I n d u s tr ia l C o al Co. . 4 8 1 1 5

J a n u a r y , 1 9 2 8 . . ... ‘ 1 8 5 J a n u a r y a n d F e b r u a r y ; 1 9 2 8 ... 2 4 8 J u n e , 1 9 2 8 ... 5 1 3

J u ly , 1 9 2 8 ... ! 5 7 3

M ay . 1 9 2 8 . . 4 5 5

M in e r o f th e f u tu r e . M ille r ...2 3 7 O c to b e r d e a th r a t e s h o w s d e c lin e . . . . 7 7 4 P r e v e n t io n . See S a f e ty

S e p te m b e rs 1 9 2 0 7 1 0

S to p w a tc h h e ld o n a c c i d e n t s . ... * 3 3 0 w a s e v e ry p r e c a u tio n ta k e n ? ( e ) . . . . 1 7 3 W h o g e ts h u r t ? ( e ) ... 4 9 4 A c c o u n ta n t a n d e n g in e e r ... 2 2 3 A c c o u n tin g , p r o p e r , t u r n s lo s s e s in t o p r o f its .

S te n d e r ... 6 8 7

A c c u m u la to r , s te a m ... ! ! ! ! * 2 6 1 A cid m in e d r a i n a g e ( e ) ... . . 6 4 4

in 00:11 in d u s tr y , in d ic a to r s , 1 2 2.

*8 8, 2 5 0 . 3 2 4 . 3 9 6 . 4 5 8 , 5 1 6 , 5 7 6 , 6 4 6 . 7 7 6 A d a m s C o al Co.. n e w m i n e ? ... 3 9 4 A d v e r tis in g a n t h r a c i t e ... ( e ) 2 3 2 2 4 1 A id , f ir s t. S ee F i r s t A id

A ir, c o m p re s s e d . S e e C o m p re ss e d A ir a n d C o m p re s s o rs

A ir. in m in e , im p o r ta n c e o f c o n s e r v in g ( e ) 4 4 1 See a ls o V e n tila tio n

A ir, in t a k e , d e f in itio n o f ... 6 5 9 A ir c le a n e r f o r d u s ty m o to r s ... * 4 6 4 A ir c le a n in g o f c o a l. S ee P r e p a r a t io n .

C le a n in g

A ir h o is ts , n e w ... ; . . . * 5 2 2 A ir in d ic a to r , d o lla r m e te r s u g g e s t e d ! ! ! ! ! ! * 3 3 1

A ir q u a n t iti e s , m e a s u r e m e n t, a n d e n e rg y lo s s e s in m in e e n t r ie s ... 7 6 1 A la b a m a

A b o lis h e s c o n v ic t m i n i n g ... ... 4 4 6 A la b a m a is s u e o f Coal A.oe, O c to b e r, 1 9 2 8 B la z in g t r a i l in ... 6 4 2 C ity f u r n a c e . B ir m in g h a m , a t n i g h t ____* 5 8 6 C o al, a n d n e w i n d u s t r i a l S o u th . M o r­

ro w ... 5 3 5

P a g e A la b a m a — C o n tin u e d .

C o a l fie ld t h a t u n d e r w r o te B ir m in g h a m 's in d u s tr y . H a ll ...* 5 8 7 D is tr ic t p r ic e s , 1 9 1 8 - 1 9 2 7 . M c L a u rln e * 66 F ir s t- a i d a n d s a f e t y m e e t i n g 3 9 4 , * 4 5 4 M a r k e t in 1 9 2 7 . M c L a u r i n e ... *6 6 M e c h a n iz a tio n o f fie ld s. H a ll ... * 5 9 7 M in in g c o m m u n itie s , v ie w s in . . . . * 6 3 2 -6 3 3 M o d e r n iz a tio n in . D a v i d s o n ... *3 5

P io n e e r s ... * 5 9 6

P o w e r b la n k e ts m in in g re g io n ...*6 4 1 S a f e t y w o r k ... * 7 0 9 S ta b i liz a ti o n . H a le ...* 5 9 1 A la b a m a F u e l & I r o n , p io n e e r in c e n tr a l

w a s h in g ... * 6 0 5

A la b a m a - P o w e r Co. b la n k e ts m i n in g r e g i o n . * 6 4 1 A lb e r t a a p p o i n ts B o a r d o f S ta n d a r d s . . . . 3 2 0 R e s e a r c h c o u n c il, r e p o r t f o r 1 9 2 7 n o te d . 7 6 1 A ld e n . A la ., d e v e lo p m e n t b y F l a t T o p , E d ­

w a r d s ... * 6 1 0 A ld rid g e , s k ip h o i s t i n g a n d d r o p - b o tto m

c a r s ...* 6 0 2 A ld r ic h , T . H .. A la b a m a p i o n e e r ... * 5 9 6 A llo y , h i g h c o p p e r b r o n z e , w ith n i c k e l . . . , 5 2 0 A l t a C oal C o., t r i u m p h o f m a n a g e m e n t a t . * 6 0 9 A lto o n a C o al & C o k e Co., r e s u m e s ... 4 8 A m e r. C o a l C le a n in g C o rp ., p a t e n t c a s e . 5 1 2 . 5 6 8 A m e r. E n g . S ta n d a r d s C o m m itte e , y e a r ­

b o o k ... 4 4 5 , 5 5 9 A m e r. I n s t i t u t e , c o a l lu n c h e o n , N e w Y o r k . 7 6 7 A m e r . I n s t i t u t e o f E l e c t r i c a l E n g in e e r s —

L e h ig h V a lle y S e c tio n , m e e ti n g . . . .3 0 5 , * 7 7 1 A m e r. I n s t i t u t e o f M in in g a n d M e ta llu r ­

g ic a l E n g in e e r s

B ra d le y . F . W .. to b e p r e s id e n t. M c- A u liife . E .. d ir e c to r ... 7 0 7 C an c els n o r t h e r n t r i p ... 5 0 7 C o m m itte e m e n a p p o i n te d ... 2 4 4 H o n o r s H o o v e r ; e le c ts G. O, S m ith . . . . * 1 8 6 M e e tin g ... 1 1 8 , * 1 3 9 . * 1 8 6 . 5 0 7 O h io s e c tio n d is c u s s e s m e c h a n ic a l m in ­

in g ... 2 9 1

A m e r . M in in g C o n g ress

C in c in n a ti c o n v e n tio n , e x h i b its , e tc ., is ­ s u e o f J u n e . 1 9 2 8

C in c in n a ti m e e tin g a n d e x p o s itio n , p r o ­ g r a m , e tc .. 1 8 3 , ( e ) 2 3 2 , * 2 4 3 . * 2 9 7 .

• 3 3 9

M e c h a n iz a tio n d is c u s s e d ... * 3 3 9 C o n v e n tio n ... * 5 2

M e e tin g ... 1 2 0

C o n v e n tio n ...7 0 9 , 7 6 9 A m e r . R o llin g M ill, p r o m o t in g g o o d w ill

a m o n g m e n . E d w a r d s ... * 5 4 0 A m e r. S o c . f o r T e s t in g M a te r ia ls , b o o k .

1 9 2 8 S u p p le m e n t ... 0 9 7 A m e r. S o c. o f M e c h . E n g ., m a te r i a ls - h a n -

d lin g m e e tin g ... 2 4 2 M in in g a n d p r o c e s s in g d is c u s s e d a t m e e t­

in g ... 5 6 9 A m e r, S ta n d a r d s A s s ’n , n e w t i t l e f o r C om -

m i tte e s u g g e s te d ... 4 5 1 A m e r. -W h o le s a le C o al A s s ’n. m e e t i n g ... 3 8 7 A n a c o n d a C o p p e r te a m w in s f ir s t- a id c o n ­

te s t ... * 5 7 2

A n a ly s e s o f A r k a n s a s a n d O k la h o m a c o a ls . p a p e r s n o te d ... ...3 8 3 A n a ly s e s a t tip p le ...* 4 0 3 A n a ly s is o f c o a ls a t H a z le to n ... 3 0 5 A n d e r s o n , G. J . , n e w p r e s .. C o n s o lid a tio n

C o al ... 3 2 0

A n g le -fa c e r o o m s in W . V a . m i n e ... * 1 9 2 A n g le -fa c e s y s te m . S tr a u g h a n ... 6 9 7 A n g le -fa c e s y s te m u r g e d . W a lto n ... 3 8 1 A n th r a c ite

C a n a d a , in 1 9 2 7 . C o o k ... 6 7 C o n s u m p tio n s te a d y , s to c k s d e c l i n e . . . . 4 5 0 C u lm a n d s ilt , p u b li c a t io n n o t e d ... 6 9 7 F r o s t R e s e a rc h L a b o r a t o r y to m a k e

s tu d y ... 7 7 4 F u t u r e , a n d c o n t e n te d l a b o r ... * 7 7 1 H i t t i n g i t s s t r i d e in m a r k e t b a t t l e ... * 29 I n 1 9 2 7 ...6 4 -6 7 P a . D e p t; o f M in es, r e p o r t f o r 1 9 2 3 -2 6

n o te d ... 5 5 9

P r ic e s . 5 1 , * 5 4 , 2 4 4 . 3 8 6

P r ic e s . 1 9 2 7 . a n d 1 9 1 8 - 1 9 2 7 ... * 5 4 P r o d u c ti o n . 1 2 2 . 1 8 8 . 2 5 0 , 3 2 4 . 4 5 S , 5 1 6 .

5 7 6 , 6 4 6 . 7 1 2 . 7 7 6

R e s e a rc h in s ti tu te d ... 6 5 2 S a le s p r o g r a m , n e w . n e e d e d . H a l e ...5 4 8 S h ip m e n ts d e c lin e ... 7 0 5 S h ip m e n ts h i g h e r ... 7 0 7 T h in b e d s , m i n in g o f ; b o o k r e v i e w 5 5 5 A n th r a c i te O p e r a to r s ’ C o n fe re n c e , tra ffic

b u r e a u f o r m e d ... 7 0 3 A n v il, h a n d , a n d p o w e r h a m m e r c o m b in e d . “ 5 2 2 A p p a r a tu s s ta n d a r d s , h a n d b o o k n o t e d . . . . 5 5 9 A r b itr a tio n . S ee L a b o r

A rc s , w h e e l-to - r a il, o n “ w ir e le s s ” e q u i p ­

m e n t ? 7 0 3

A rc w e ld , S ee W e ld in g

A r k a n s a s , c o a ls , a n a ly s e s ; p a p e r n o t e d . . . . 3 8 3

P a j-e A r k a n s a s A n th r a c i te P r o d u c e r s ’ A s s ’n

formed ... o il

A r m a t u r e s . S ee E le c t r i c it y , P o w e r a n d E q u ip m e n t

A rm y . U . S .. r e c e iv e s b id s f o r c o a l ... 1 7 8 A rn o ld . G. C., r e c e iv e r , W . V a . C o al &

C o k e C o... . 5 1 A r r e s te r c i r c u it , im p e d a n c e d e c r e a s e d ... * o 0 3 A r z in g e r f lo t a ti o n c e ll u s e d a t N ew

C a s tle ...

A sh , in h e r e n t, a m is n o m e r . T u r n e r ...4 7 2

A sh in c o a l (0) ... 1 7 3

A s h i n c o k e , d is c u s s e d ... 2 9 6 A s h in f u e l s h o w n b y X - r a y s ... 5 6 1 A s s o c ia tio n s a n d I n s t i t u t e s . See n a m e s o f

a s s o c ia tio n s , a s A m e r. I n s t i t u t e o f M in in g a n d M e ta llu r g i c a l E n g in e e r s

A u to m a tic c o n tr o l a id s p u m p in g . K en- w o r th y ... * 8 4 A u to m a tic c o n t r o l o f m in e s u b s t a ti o n s . . . * 4 0 1

B

B a b b i tt s c r a p , r e c a s t in g ...* 1 2 9 B a il a d d e d to t r a n s f e r c a r s a v e s l a b o r . . . . * 7 6 2 B a k e r , D r. T . S ... * 7 2 6 B a k e r . H . F ., q u i t s P i t t s b u r g h T e r m in a l . . 5 1 2 B a ltim o r e m a r k e t in 1 9 2 7 . H o u g h 6 5 B a n k e r - i n d u s tr ia l is t lo o k s a t c o a l b u s i­

n e s s ( e ) 7 5 4

B a n k e r s , b u d g e t s a n d m a n a g e m e n t (e ) . . . 2 0 1 B a n k h e a d M in e . S ee C a n e C re e k C o al C o.

B a r g a in in g , c o lle c tiv e . See L a b o r B a t te r y , s h o r t, s a v e s c o a l a n d liv e s . M c-

K im ... * 6 6 3

B a t te r y h a n d lin g , c o n v e n ie n c e s f o r ...* 4 8 7 B e a rin g s , l u b r i c a t io n , te s t e d ...* 2 6 0 B ell & Z o lle r C o al & M in in g C o., b o tt o m

e q u ip m e n t, n e w . a t Z e ig le r N o . 1 ... * 5 4 2

• B e lle E lle n , n e w w a s h e r y ... 4 5 2 B e lt c a r r i e r f o r a n y ty p e b e a r i n g ... * 2 6 1 B e lt c o n v e y o rs , se e L o a d in g a n d S h o v e lin g B e lt d r iv e s , lo o se , m a y s a v e m o n e y * 7 6 2 B e lts , c o n v e y o r, l a p s p lic e f a v o r e d . . . * 7 0 1 B e lts le a d c o a l f r o m d u m p s to ti p p le . . . . 1 6 0 B e n c h e s , c o t l , k e e p in g p r o d u c t s e p a r a t e .

M a lo n e y ... 5 4 4

B e r t h a C o n s u m e rs C o.. in r e c e iv e r s ’ h a n d s . 1 8 2 B e rw in d , J . E .. d ie s ... * 3 9 4 B e ssie . S ee S lo s s-S h e ifie ld S te e l & Iro n B e t h le h e m - F a ir m o n t C o al C o., S c o tt m in e .

m a c h in e lo a d in g . H a y m o n d ... * 6 8 5 B id s to b e o p e n e d ... 1 1 5 B ig B e n d C o al Co. b u y s s t r i p l a n d . 5 0 B ig V e in C o al C o., B u c k s k in m in e m a d e

p r o f it a b le ...* 7 2 9 B ig g e it p r o b le m in 1 9 2 8 ... * 6 B ill se e s th e li g h t. E m ig k ... 6 8 1 B ird . B . M ...* 7 3 5 B ir m in g h a m . A la ., c i ty f u r n a c e a t n i g h t . . * 5 8 6

C o al fie ld t h a t u n d e r w r o te its in d u s tr y . H a ll ...* 5 8 7

V ie w s ... * 5 9 0

B itu m in o u s

C a n a d a , in 1 9 2 7 . C o o k ... 0 7 C o n s u m p tio n , e x p o r ts , p r ic e s a n d p r o d u c ­

ti o n * 5 4 , 1 2 2 , 1 8 0 , 1 8 8 , 2 5 0 . 3 2 4 , 3 8 8 . 4 5 0 , 4 5 8 . 5 1 6 , 5 7 6 . 6 4 0 . 7 0 3 , 7 1 2 , 7 7 6

P r ic e s . 1 9 2 7 , a n d 1 9 1 8 - 1 9 2 7 ... * 5 4

S to c k s d e c lin e 1 7 8 . 1 8 5

U . S . S h ip p in g B o a r d to e n c o u ra g e c o a l e x p o r t a ti o n ... 5 8 9 B la c k a r t , s tu d y in ...* 1 3 8 B la c k D ia m o n d r e s u m e s ... 4 5 2 B la c k M o u n ta in , e x p lo s io n ... 3 8 5 B la d e s , s te a m tu r b i n e , te s t s o f f a t ig u e

s t r e n g t h ... 7 6 1 B la s tin g

B la s tin g u n d e r ly in g a te n d e r r o o f . e tc ..

b u ll e ti n n o te d ... 6 9 7 C a rd o x , u s e o f ... * 1 6 0 C a rd o x a n d m e c h a n ic a l lo a d in g . W e ir

a n d E d w a r d s ... * 2 8 8 E x p lo s iv e s , c o r r e c t h a n d l in g ... . * 1 2 8 E x p lo s iv e s , p e r m is s ib le . ...* 4 9 0 E x p lo s iv e s , p e r m is s ib le , p u b li c a t io n n o te d 5 5 9 H a n d d r il lin g ... 1 7 6 F la m e s f r o m e x p lo s iv e s , r e s e a r c h n ee d ed

<e) ... 3 7 9 I m p r o v e d , c u t s s tr ip - m in e c o s ts . N ie lse n

* 2 1 0 ; c o r r e c tio n 4 1 0

I n s u l a t e d m in e - e a r c o u p lin g s ... * 5 0 2 L i q u id o x y g e n , c u t s s t r i p m in e c o s ts .

N ie lse n * 2 1 0 ; c o r r e c tio n 4 1 0

L i q u id o x y g e n , n e w p l a n t ... 5 1 L u m p c o a l— h o w to g e t i t ... * 1 4 2 L u m p , in c r e a s e d , a m u c h s o u g h t g o a l . . 4 4 3 M a th e r e x p lo s io n ( e ) ... 3 7 8 M e th o d , n e w ... 3 1 9 M is fire s , p r e v e n tio n , b u l l e t i n n o t e d . . . . 6 9 7

(3)

January-December, 1928

P a g e B la s tin g — C o n t’d

M o d e rn ; b o o k re v ie w . . . . • • • • • • • • 2 3 9 S in g le - s h o t u n i t s , p e r m is s i b le ; p a p e r

n o te d ..."a...

S te m m in g ; u s e o f : f o ld e r n o t e d ... o o » B la s ts . S ee A c c id e n ts

B lin d s e llin g (e )

4 9 ^ 2 9 0 3 8 4 1 0 7 2 3 9 B lin d s e llin g ( e l . . ...* • • • ■... 2 3 g B lo c k s ig n a ls , a n d p h o n e s . G r i m m 3 1 3

P r e v e n t w re c k s . T h o m a s ...

B lo c to n N o . 1 0 le a s e d ... ...

B lo w e r, im p r o v e d ... o o x

B lo w e r o r s u c tio n d e v ic e c h a s e s d u s t . . . . 1 3 0 B lo w e r, p o r ta b le , n e w ...

B lo w e r, s m a ll, e l e c tr i c ...

B lo w p ip e , a c e ty le n e , n e w ... 3 u u B o a rd o f S ta n d a r d s , A lb e r ta , a p p o i n te d . . 0 2 0 B o ile r ro o m s , w a s te in . b o o k n o t e d o y / B o ile r tu b e s , o ld , f o r m a n w a y m o u t h 4 3 t B o n e c o a l s to p p in g s ... 1* ° B o o k R e v ie w s

“ B r itis h S a f e t y in M in e s R e s e a r c h B o a r d ,” r e p o r t . ... J g J

“ C oal C a r b o n iz a tio n ...* 9 «

“ C oal M in e r s ’ P o c k e t b o o k ” * • 1 0 7

“ C o st o f L i v in g in T w e lv e I n d u s t r i a l C itie s ” ... * * • * *• * v

“ C oal S tr ip p i n g P o s s ib i lit ie s in I ll in o is

“F in a n c ia l a n d B u s in e s s F o r e c a s t in g

“ F la m e - P r o o f E l e c t r i c a l A p p a r a t u s ’ . .

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I V C O A L A G E Vol. 33

C u lm a n d s ilt , a n t h r a c it e , p u b lic a tio n n o te d (»97 C u lv e r t e r o s io n s o lv e d b y i n v e r t p a v e ­

m e n t ...* 2 0 0 C u n n in g h a m , W . H „ p r e s id e n t, T r u a x - T r a e r

Co. ... 7 0 8

C u r ta ilm e n t o i o u t p u t ... 1 0 2 C u tte r f o r s m a l l p ip e ... 7 1 6 C u t t e r f o r u n d e rc u ttin g -, e t c ...* 1 3 2 C u tt in g a n d s h e a r in g , d is c u s s e d a t C in c in ­

n a t i ... 3 5 4 C u ttin g a n d w e ld in g to r c h , n e w . . . * 5 8 0

" C z a r " a d v o c a te d b y D a v is . ... 4 8 P ag e

D

D a n c in g t o r m i n e r s ’ c h ild r e n ...* 6 2 0 D a n ie l, J , P .. a p p o in te d c h ie f m in e in s p e c ­

t o r o f K y . ... * 6 0 0

D a u g h e r ty , O ., o u s te d f r o m u n io n ... 3 2 0 D a v is , J . J ., a d v o c a te s c o a l " c z a r ” ... 4 8 D a v is C o al & C o k e Co. A ir c le a n in g p la n t.

N a y lo r a n d B r o s k y ...“2 7 0 D a w so n m in e . S ee C o n s o lid a tio n C o al Co.

D a y la b o r . S ee L a b o r .

Do B a r d e le b e n C o al C o rp ., s a f e t y r e c o r d . . . * 2 3 / S ip s e y m in e d e v e lo p m e n t ...* 6 1 3 D e m a n d r a t e f o r p o w e r ... 1 2 7 D e m o c ra tic p l a t f o r m o n c o a l a n d l a b o r . . . 4 4 7 D e te rm in a tio n o f in t e r p o le r e l a ti o n ...* 4 0 0 D ie s to c k , q u ic k ly a d j u s t e d ... * 7 8 0 D ie se l e n g in e , s m a ll, n e w ... * 2 6 0 D ir e c t- c u r r e n t in s tr u m e n ts , n e w ...* 5 8 2 D ir t r e m o v a l, s te a m g e n e r a to r f o r ... * 2 6 3 D is e a s e s o f m i n e r s ... 2 9 6 D is p a tc h e r s a n d D is p a tc h in g

D is p a tc h e r ; g e t tin g o u t t h e c o a l ...2 3 4 D is p a tc h e r a n e c e s s ity . B e n n e tt ... 3 1 1 D is p a tc h in g s y s te m . B r it is h e r ... 6 9 7 D is p a tc h in g s y s te m . W a lto n ... 3 1 3 D is p a tc h in g s y s te m s . P o w e ll ... 3 1 3 D is p a tc h in g , v a l u e s h o w n . E d w a r d s .

S e lk ir k , L u x t o n , B o h n 3 8 2 , 3 8 3 D is tr ib u t io n . S ee M e r c h a n d is in g .

D is tr ib u t o r s . S ee R o c k D u s tin g .

D ix ie m in e , c h a n g e to lo n g w a ll g iv e s s a t i s ­ f a c t io n . E d w a r d s ... * 8 6 D o la - P e n n C o a l Co. b u y s t r a c t ... 5 1 D o lla r m e te r a s a i r in d i c a t o r ... * 3 3 1 D o m in io n C o al Co., h o i9t o p e r a te s r e g e n e r a -

tiv e ly ... * 1 9 3 D o n e tz b a s in , R u s s ia , p r o d u c t io n . . . .5 2 8 ,

c o r r e c tio n . 6 0 4

D o o rs, m in e , e le c tr if ic a tio n ... . . * 1 6 4 D o o rs to s a v e liv e s ... 9 4 D r a g s c r a p e r u s e d f o r r e f u s e ... * 4 3 7 D r a in a g e , m in e , a c id ( e ) ... 6 4 4 D rie d c o a l, e x p a n s io n w h e n w e tte d . H a l l . . 6 9 2 D r ie r f o r s a n d , h o m e -m a d e ... * 7 2 D r ills a n d D r illin g

D r if te r d r ills , n e w ... * 7 1 6 D r illin g b y h a n d ... 1 7 5 D r illin g o u t b r o k e n s tu d s w i t h d r il l s u p ­

p o r t ... * 0 9 8

E l e c t r i c d r ill, p o w e r f u l ... . . , * 5 2 2

" E l e c tr i c m u l e ” . . ... * 1 9 S S p a r e d r il l f o r d r iv i n g n u t s * 5 0 1 S te e l s h a r p e n e r , f a s t ...* 7 1 7 D r iv e s s lo p e e a s t to m e e t w e s t p it c h .

R e e se ... 5 2 8 D ro p - b o tto m c a rs , a t A ld rid g e ...* 6 0 2 D r y in g o u t e le c tr ic m o to r s ... * 4 3 8 D u c k b ills . S ee C o n v e y o rs .

D u c tile w e ld m e ta l ... * 2 5 9 D u e ts , f ib e r, p r o te c te d ... 7 0 1 D u m p c a r , n e w ... * 2 5 9 D u s t in M in es (S e e a ls o R o c k D u s tin g )

B r it is h r e p o r t ... 1 0 7

C a n m in e s s t r i k e s p a r k s ? ... 1 0 0 C h a s e d b y b lo w e r o r s u c ti o n d e v ic e . . . . * 1 3 5 C o n tro l o f d u s t a n d v e n t i l a t i o n a t S lo ss-

S h e flle ld m in e s ... * 6 2 9

" G a s e s , D u s t a n d H e a t in M in e s ," b o o k r e v ie w ... 1 7 1 I g n it e d b y " m i n e li g h tn in g " ... 7 6 0 I n e r t ; h o w m u c h i s n e e d e d ? ... 5 4 7 P o u n d o f d u s t to a s h o v e l o f c o a l ( e ) . . 5 5 2

S p o n ta n e o u s e l e c tr i f ic a tio n in d u s t c lo u d s.

p a p e r n o te d ... 6 9 7

D u s t, c o a l, f o r o il in e n g in e s ... * 4 8 9 D u s tin g . S ee R o c k D u s tin g .

D u s tle s s c o a l, d e m a n d f o r ... * 6 9 9 D y e in g c o a l ... 4 5 3

E a s t e r n O h io O p e r a to r s , m e e t i n g ... 1 8 2 E b e n s b u r g C o a l C o., u n d e r g r o u n d h a u l in g

d is c u s s e d ... 3 4 3 E b e n s b u r g f a i r a n d a n d f ir s t- a id m e e t . . . . 3 8 8 E c o n o m ic s

B lin d s e llin g ( e ) ... . . 2 6 5 B u y in g ; w h a t ’s w r o n g w ith ? W h l te h o r n e 3 5 6 C o a l in d u s tr y ’s b ig g e s t p r o b le m in 1 9 2 8 . . * 6 C o n s o lid a tio n ’s n e w p r o g r a m w in s a p ­

p r o v a l ...4 3 1 C o n tin u e d p r o s p e r it y in d ic a te d b y b a s ic

é c o n o m ie f a c t o r s ... * 3 C o st o f li v in g in 1 2 i n d u s t r i a l c itie s . . . 4 9 2 D is tr ib u t io n . S ee M e r c h a n d is in g .

E c o n o m ic o p e r a t io n : C o n s o lid a tio n s h u t s d o w n m in e s : g iv e s r e a s o n s ( e ) . . . . , 3 3 3 F in a n c ia l a n d b u s in e s s f o r e c a s t in g , b o o k

o n ... 3 8 4

F u n d a m e n ta l s d is c u s s e d b y N a t ’l C o al A s s ’n ... * 7 3 2 M a s s p r o d u c tio n ( e ) ... 1 P r ic e c u t t i n g : w h o p a y s c o s t? W h ite -

h o r n e ... 2 2 9

E c o n o m ic s — C o n t'd

P r o f i t o r p r o d u c t io n ? ... 1 4 1 P r o g r e s s r e v ie w e d b y I n d u s t r i a l B o a r d . . 3 9 4

“ R o a d to P le n t y ,” b o o k r e v ie w ...4 9 2 S o c ia l e n g in e e r in g ( e ) ... 2 3 2

S ta t e s m a n s h ip ( e ) . 1 3 7

T e a c h in g f o r e m a n to i n t e r p r e t e c o ­ n o m ic f a c t s . D ie m e r ... * 7 4 7 T e a m w o r k (e ) ... 2 9 5

“ T e a m w o r k f o r P r o f its in a B u y e r 's M a r k e t ,” a d d r e s s b y E . J . M e h r e n . . . 3 8 5 W h y d id c o a l m in e s lo s e b illio n in fiv e

y e a r s ? W illia m s ... 4 2 9 E d is o n , T . A ., in s p e c ts c a p la m p . . A . . . . * 1 3 5 E d i to r ia ls

A n d n o w i t is M a th e r ... 3 7 8 A n th r a c i te a d v e r t is e s ... 2 3 2 A re e n g in e e rs p e o p le ? ... 7 5 4 A re s n o w le s s s tr e e ts a p ip e d r e a m ? ... 6 9 1 A t is s u e ... 2 9 5 B a c k to f u n d a m e n ta l s ? . ... 2 9 4 B a n k c r - i n d u s tr ia l is t lo o k s a t c o a l b u s i ­

n e s s ... 7 5 4

B lin d s e llin g ... 2 6 5 B r in g in g m in in g o p e r a t io n s to th e l i g h t

o f d a y ... 2 9 4 B u d g e ts , b a n k e r s a n d .m a n a g e m e n t ( e ) . . 2 0 1 C an a n t h r a c i t e b e p a c k a g e d a t th e m in e ? 3 7 8 C le a n c o a l a n d w o r k in g tim e ... 5 5 2 C o al v s . o il ... .. 4 6 5 C o m m o n g r o u n d ... 4 0 5 D o p il la r s le a k ? ... 7 5 5 D r a m a t iz i n g s a f e t y ... 6 4 4 E q u i p m e n t m a n u f a c t u r e r s ’ c o n t r ib u ti o n

to in d u s tr y ... 1 0 9 E x p lo s io n s c h o o s e w h a t m e n r e f u s e . . . 4 4 0 F u r t h e r r e s e a r c h in t o lla m e s o f e x ­

p lo s iv e s n e e d e d ...3 7 9 G rip i t a n d lic k i t ... 5 2 5 I f w a te r , w h y n o t a i r ? ... 4 4 1 I n th e r i g h t d ir e c tio n ... 6 9 0 I n s p e c t io n a l s p e c ia liz a tio n ... 6 9 0 I s a s h in c o a l a s s t a b l e a s b e lie v e d ? . . 1 7 3 I t c a n b e d o n e ... 7 5 5 L o n g - r a n g e p la n n in g f o r a n t h r a c i t e . . . . 1 7 2 L o o k s h a r p ly a t p o w e r b il ls ... 1 0 8 M a k in g r e s e a r c h p a y i t s w a y 1 7 3 M a s s p r o d u c t io n ... 1 M e c h a n iz a tio n a n d m a in te n a n c e . . . 4 4 0 M in e ,l tr a c k tr a f fic d e n s e r t h a n o n r a i l ­

r o a d ... 7 5 4 M o v in g f r o m t h e m in e s ... 3 7 8 N ew l i g h ts p la y o n m e th a n e ig n i tio n . . . 1 0 8 N o t t h e w a y ... 6 9 1 O n to C in c in n a ti ... 2 3 2 O nce a m in e r , a lw a y s a m i n e r ... 4 4 0 O ne r e s u l t o f c o - o p e r a tio n ... 6 4 4 O ne s te p a t a tim e ... 7 3 P e n n s y lv a n i a v e n t ila tio n la w n o u n iv e r s a l

p r e c e d e n t ... 2 9 5

P le a f o r p r o g r e s s ... 5 5 3 P o lit ic s a n d c o m m is s io n s . . . . 2 3 3 : l e t t e r 2 2 7 P o lit ic s c r a c k s th e w h i p 1 7 2 , 1 8 0 ;

l e t t e r 2 2 7

P o u n d o f d u s t to a s h o v e l o f c o a l . . . 5 5 2 P r e p a r a t i o n a n d r e a l iz a tio n ... 6 4 5 R e a ffirm s s ta n d ... 6 9 0 R u in e d r e c o r d s ... 6 9 1 S a f e t y d a y s a n d s a f e w a y s . 5 5 2 S a lv a g e ... 6 4 5 S e lf - g o v e rn m e n t ... 6 6 1 S e r v in g w h o le fie ld o f b u s in e s s . . . .4 4 1 .

se e a ls o 4 5 1

S h o u ld o ld m in e s b e s e a l e d ? ... 6 4 4 S ig n p o s ts to c i v i l i z a t i o n ... 7 2 1 S o c ia l e n g in e e r in g ... 2 3 2 S ta te s m a n s h ip ... 1 3 7 S u m m e r c o u r s e s a n d f e llo w s h ip s . . . 3 7 9 T e a m w o r k ... 2 9 5 T h e i r m e n u a n d o u r s ... 5 5 3 T h i n n e r c o a l, b ig g e r c a r s ... 6 4 5 T r e a tm e n t o f tim b e r s h o u ld b e s ta n d a r d

p r a c t ic e ... 2 3 3 U n p le a s a n t c o in c id e n c e ... 4 4 1 W a s e%-ery p r e c a u tio n t a k e n ? ... 1 7 3 W a v e a c tio n f o llo w in g c o a l e x t r a c t i o n . . 1 0 9 W h e re w e re s a f e t y b o a r d s w h e n r ib s

w e re f ir s t d r a w n ? ... 2 9 4 W h o w ill b e n e x t ? ... 3 3 3 E d n c a tio n

C o lleg e g r a d u a t e s in i n d u s t r y ...* 1 4 6 S c h o o ls , tw e lv e , f o r m in e r s o p e n e d . . . . 7 7 0 S u m m e r c o u r s e a n d f e llo w s h ip s ( e ) . . . 3 7 9 T o w n e S c ie n tific S c h o o l, f u e l c o u r s e . . . 5 1 2 U n io n P a c if ic C o al Co. s e ts u p m in in g

s c h o la r s h i p ... 3 8 8 W e st V ir g in ia , e d u c a tio n b r o a d e n s ... 7 0 6 E d w a r d s , J . H ., a n d W e ir, P .'. o n m e c h a n *

iz in g a m i n e ... 3 0 4 E lectric R a ilw a y Jo u rn a l w in s A . B . P .

r e w a r d ... 1 7 8 E l e c t r i c S h o v e l C o al C o rp . I r id ia n a s t r i p

m in e e q u ip m e n t. B a lz e r ...* 4 8 2 E le c t r i c ia n v s . f o r e m a n ... 2 3 6 , 3 8 3 E l e c t r i c it y — P o w e r a n d E q u ip m e n t

A p p a r a tu s ! f la m e -p ro o f, b o o k r e v ie w . . . 1 0 7

A p p lia n c e s ... * 4 6 2

A rc s s to p p e d b y g r o u n d in g m a c h in e f r a m e ... 7 0 0 A r m a t u r e d e f e c ts s h o w n b y h o m e -m a d e

te s t e r ... * 7 6 3

A r m a t u r e p o in t te s t e r ... * 2 5 5 A r m a t u r e s , b u r n in g . E m l g h ... 6 8 1 A r m a t u r e s , o v e r w in d in g p r e v e n te d b v in ­

d ic a to r ... * 5 8 0

A r r e s te r c ir c u it, im p e d a n c e d e c re a s e d . . . « 5 0 3 A u to m a tic c o n t r o l o f m in e s u b s t a t i o n s . . * 4 0 1 C a p a c ito r, s e rie s , a llo w s lo n g e r a .c . li n e s . 7 6 6 C e n tr a liz e d s y s te m , s u p e r v is o r y c o n t r o l . . 7 8 4 C o m m u ta to r d r e s s in g m a d e e a s y ...* 7 8 0 C o n d u it f it tin g m a k e s r u g g e d te r m in a l . . * 4 3 6 C o n n e c to r s ta n d s w a te r a n d r o u g h h a n d ­

li n g ...* 7 0 0 D u c ts , f ib e r, p r o te c te d ... ! , .* 7 0 1

P ag e P a g e

E l e c t r i c it y — C o n t’d

E m e r g e n c y p la n t ... 7 1 7 E q u i p m e n t , c h a n g e f r o m 5 0 0 - v o lt to 2 5 0 -

v o lt ... * 6 9 8

E q u ip m e n t, c o n d itio n ... * 4 0 3 E q u ip m e n t, n e w ...5 2 0 - 5 2 4 F u s e s , c o lo r e d ... 7 8 4 G e n e r a to r c a p a c it y r a i s e d b y u s e o f

h y d r o g e n ... 7 0 2 G r o u n d in g m a c h in e f r a m e s to p s a r c s . . 7 0 0 G r o u n d in g o f a .c . m a c h in e r e d u c e s

d a n g e r ... * 4 3 4 G r o u n d w ire s , p r o te c ti n g ... .* 4 3 5 I n s tr u m e n ts , a .c ., p o r ta b le . . . * 7 8 2 I n s u l a t o r , p o w e r , o f g la s s ...* 7 2 0 I n te r p o le r e l a ti o n , d e t e r m i n a tio n o f . . . . * 4 0 0 L i m it s w i tc h te s t m a y d a m a g e e q u i p ­

m e n t ... 3 3 0 L i m ite r , s im p le , f o r m o to r d r iv e s ... * 4 6 2 L i n e c o n n e c tio n , n o w r e n c h n e e d e d * 7 0 2 M o t o r s :

A ll-in c lo s c d ...* 4 6 3 , * 7 1 8 , * 7 1 9 A ll-in c lo s e d , fa n - c o o le d ... * 7 1 8 F o r g a s s y p la c e s ... * 7 1 7 A n d e x c ite r f o r a u t o m a t i c c o n tr o l.

N e w m a n ... * 2 1 5 A n d p u m p u n it , c a s t i n t e g r a l l y * 2 0 0 D r y in g o u t ... * 4 3 8 E x h i b ite d a t C in c in n a ti ... * 3 6 9 G e n e r a to r lo s s e s s h o w in c o m p a r is o n 7 0 1 H ig h -s p e e d , in a ll-w e ld e d d e s ig n . . . . * 7 8 2 H y d r a u lic , f o r h o is t, c a n b e r u n a t

c o n s ta n t s p e e d ...* 7 8 0 I n d u c t io n , w ith h ig h s t a r t i n g t o r q u e . * 7 8 3 I n d u c t io n s t a r t e r , n e w ... *5 8 1 I n d u c t io n , s t a r t i n g o n f u ll- lin e v o lta g e * 2 6 3 L im ite r , s im p le , f o r m o to r d r iv e s . . . . * 4 6 2 L o w - v o lta g e a .c . a n d l i m i t a t i o n s 5 0 0 P e r m is s ib le . H a th a w a y ... * 6 7 1 P r o te c te d a g a i n s t o v e r lo a d b y th e r m a l

r e la y s ... .* 5 6 0 S m a ll, f o r g a s s y m in e s ...* 4 6 3 S p e ed c h a n g e r s ... * 1 3 3 S t a r t e r , n e w m a n u a l ... * 7 8 3 T im e - d e la y b u t t o n b o x ...* 2 6 4

" M u le ,” e l e c tr i c f o r d r il lin g ... * 1 9 8 P o la r i ty , p r o p e r , a s s u r in g ... 4 3 6 P o w e r :

A d e q u a te , f o r m a c h in e r y . G rim m . . 4 6 A n d m a in te n a n c e u n d e r c e n tr a liz e d

c o n tr o l. E l l i o t t . ... * 5 9 4 B ills , lo o k s h a r p l y a t (e ) ... 1 0 8 C a p a c ity a n d p r o d u c t io n in U . S 4 4 5 C o n s u m p tio n , g r a p h i c m e a s u r e m e n t

e ffe c ts s a v in g s . ... * 08 C o n tro l, p o w e r f a c t o r . S h a w ... 2 3 5 C o st d o u b le d b y h a l v e d p r o d u c t io n . . 6 9 D e m a n d r a t e ... 1 2 7 E l im i n a ti n g m a x im u m d e m a n d c h a rg e s 4 4 8 F a c t o r a n d c o s t ... 1 7 4 F a c t o r c o n tr o l. E d w a r d s ... * 7 5 . * 1 1 6 F a c t o r , c o r r e c tio n o f ... 4 4 5 F r o m c e ll o r w ir e ? H i c k s ... * 95 I n v e s t in lin e lo s s o r e q u i p m e n t ? . . . .* 1 5 9 M e c h a n is m e x h i b ite d a t C in c in n a ti . . * 3 6 9 P la n t s , b it u m in o u s c o n s u m p tio n 1 2 2 , 1 8 8 R e g u la to r , a u t o m a t i c ... 7 5 . * 1 1 6 S a v in g ... 2 3 5 S a v in g b y e le c tr ic ia n . B u llo c k ... I l l S tu d y , p r o f it in . J a m e s ... 2 3 5 S u b s t a ti o n s . S ee E l e c tr ic ity . S u b ­

s ta t io n s .

U p k e e p m e a n s e ffic ie n t e q u ip m e n t.

S eese ... 1 1 1 W ir e le s s tr a n s m is s i o n ... 1 7 8 R e p a i r s u p p lie s , c o s t l y ... 5 5 6 S a f e t y la m p g a in s in O k l a h o m a ...3 9 1 S t a r t e r f o r m o to r , n e w m a n u a l ...* 7 8 3 S t a r t i n g h ig h - v o lta g e , t r e n d t o w a r d * 2 5 7 S t a t i c c o n d e n s e r s e ffe c t p o w e r s a v in g s . . * 4 3 5 S to n e f o r to u c h in g u p c o m m u ta to r . . . . 2 6 2

" S t o p ” b u t t o n s f a v o r e d in U t a h ... 6 9 9 S u b s t a ti o n s :

A u to m a tic c o n tr o l ... * 4 0 1 C h a n g e c u t s b ill ... 5 6 1 . F u l l a u t o m a t ic c o n tr o l ... * 7 0 1 I n s id e ... 3 2 9 M e th o d s o f s t a r t i n g ... 1 9 5 S tu d y in g . W ig h tm a n ...* 4 2 5 S u r f a c e , n o v e l c a b le s u p p o r t ... * 1 2 7 U n it, c o m p le te - ... * 2 5 5 S w itc h e s :

C e n tr a liz e d c o n t r o l s u p e r v is o r y s y s te m . 7 8 4 E q u i p m e n t , a u t o m a t i c ... * 2 5 5 T nelosed ...* 1 3 3 I n s tr u m e n t, f o r s m a ll s p a c e . . ... * 4 6 4 L i m it s w itc h te s t m a y d a m a g e e q u ip ­

m e n t ... * 3 3 0 S w i tc h - s ta r t ...* 1 3 4 V a r ia b le - le a k a g e . d o u b le s q u ir r e l c a g e ,

n e w ... * 1 3 5 W ith s e a le d b e a r i n g s ...* 1 3 4 T e s te r , h o m e -m a d e , s h o w s a r m a t u r e d e ­

f e c t s ... * 7 6 3 T im e - lim it c o n t r o l f o r a .c . h o i s t s ... 5 4 6 W h e e l- to - r a il a r e s 011 " w ir e le s s ” e q u i p ­

m e n t? ... 7 6 3

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lo a d e r . G rim m ... 3 8 1 E n g i n e e r in g p r o g r e s s . A lle n ... * 3 3 E n g in e e r s , a r e th e y p e o p le ? ( e ) . . . 7 5 4 E n g in e e r s m e e t ... 3 0 5

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