Carbonizing properties and petrographic composition of thick Freeport-bed coal from Harmar mine, Harmarville, Allegheny County, Pa.
Subtitle: and the effect of blending this coal with Pocahontas No. 3- and 4-bed coals
By: by J.D. Davis ... [et al.]
Series: Technical paper - United States. Bureau of Mines ;; 655; Technical paper (United States. Bureau of Mines) ;; 655.
Publisher: U.S. Govt. Print. Off.
Published: 1943
Place of publication: Washington
Language: eng
Number of pages: 46
Subjects: Coal -- Pennsylvania -- Allegheny County; Coal -- Testing; Carbonization
Notes: Cover title.
At head of title: United States Dept. of the Interior, Harold L.  Ickes, secretary; Bureau of Mines, R.R. Sayers, director.
"Publications on the survey of carbonizing properties of American coals": p. 44-46.