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Start Over Author Commerce Department Sudoc Stem C 22.5

41. Mine accidents. Falls of roof and coal in mines operating in Pittsburgh coal bed in Marion and Monongalia counties, W. Va.; by J. W. Paul and J. N. Geyer.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1932
SuDoc number:: C 22.5:522

42. Mine accidents. Falls of roof and coal in mines operating in Sewickley coal bed in Monongalia County, W. Va.; by J. W. Paul and J. N. Geyer.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1932
SuDoc number:: C 22.5:520

43. Mine ventilation. Natural ventilation of Michigan copper mines; by G. E. McElroy.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1932
SuDoc number:: C 22.5:516

44. Oscillators. Construction of master mechanical oscillator for testing seismic recorders and other allied apparatus; by F. W. Lee and G. A. Irland.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1932
SuDoc number:: C 22.5:518

45. Petroleum. Oil prospecting in Kentucky by resistivity methods [with bibliography]; by J. H. Swartz.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1932
SuDoc number:: C 22.5:521

46. Petroleum. Survey of high-sulphur crude oils (black oils) produced in Wyoming; by H. M. Thome and Walter Murphy.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1932
SuDoc number:: C 22.5:538

47. Safety organizations at Lake Superior iron mines; by F. S. Crawford.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1932
SuDoc number:: C 22.5:515

48. Bornite. Chemistry of leaching bornite; by John D. Sullivan.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1931
SuDoc number:: C 22.5:486

49. Coal mines and mining. Explosions in Washington coal mines; by S. H. Ash.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1931
SuDoc number:: C 22.5:507

50. Coal-mine safety organizations in Alabama; by R. D. Currie.

Corporate/Agency Authors:: Mines Bureau and Commerce Department
Publisher:: Mines Bureau
Date:: 1931
SuDoc number:: C 22.5:489

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