Results 1 - 3 of 3
7/18/2016 - Contracts and cooperative agreementsA contract to design, develop, and deliver a test and measurement tool based on a proof-of-concept model for mapping wireless coverage areas in underground coal mines.
1/1/2001 - Conference papersThe compliance sampling method for coal mine dust in the United States has not changed appreciably in the last 30 years. A call for more frequent sampling with immediately available results is leading to new instruments that may supplement or replace th...
12/1/1974 - Reports of InvestigationsThe principal emphasis of this Bureau of Mines report is on pneumatic drill noise control. Methods are suggested to reduce the noise level by complementing existing machines.