Effective rock-dusting of coal mines.

Creator Personal:

Rice, George S. (George Samuel), 1866-1950.

Title:

Effective rock-dusting of coal mines.

Call Number:

P20755

Date:

1927

Description:

Serial issue. Issued as: United States. Bureau of Mines. Information circular, circular no. 6039 (1927:June).

Subject Topical:

Coal dust., Coal mines and mining--Safety measures., Mine explosions--Safety measures., Mine explosions--Prevention.