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Start Over Author Interior Department Sudoc Stem I 28.23

481. Chimneys. Reduction of fly-ash emission from chimneys: by J. F. Barkley.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: [Sept. 1939.]
SuDoc number:: I 28.23:3472

482. Coal dust. Notes on large-scale tests of explosibility of coal dusts made in United States and Great Britain; by H. P. Greenwald.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3462

483. Coal mines and mining. Methods of rock-dusting American coal mines; by J. J. Forbes.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3465

484. Explosives. Active list of permissible explosives and blasting devices approved prior to June 30, 1939; [prepared by J. E. Tiffany and Z. C. Gaugler].

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3471

485. Firedamp. Ignition of firedamp by explosives [with bibliography]; by Bernard Lewis and Guenther von Elbe.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3463

486. Firedamp. Recent research by Bureau of Mines on ignition of firedamp by explosives; by S. L. Gerhard, J. C. Holtz, and Wilbert J. Huff.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3464

487. Mining Division. Annual report of Mining Division, fiscal year 1939; by Chas. F. Jackson.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3470

488. Ores. Progress reports, Metallurgical Division: 32, Ore-dressing studies, properties of suspension media for float-and-sink concentration; by F. D. DeVaney and S. M. Shelton.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3469

489. Quarries and quarrying. Time study analyses, progress report: 1, Quarry shovel loading: by J. R. Thoenen and E. J. Lintner.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3461

490. Quarries and quarrying. Time study analyses, progress report: 2, Quarry haulage; by J. R. Thoenen and E. J. Lintner.

Corporate/Agency Authors:: Mines Bureau and Interior Department
Publisher:: Mines Bureau
Date:: Sept. 1939
SuDoc number:: I 28.23:3467

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