EMJ Calendar
- Economic & Evaluation Investment Decision Methods (05-14)
- Future Mongolia (05-16)
- ALTA Nickel-Cobalt-Copper, Uranium & Gold Conference (05-26)
- M&T Expo 2012 (05-29)
- AIMS 2012 7th International Symposium “Rockbolting and Rock Mech (05-30)
- Western Mining Electrical Association Bi-annual Meeting (05-30)
- 27th Annual Mining Expo (06-04)
- Show more...
Weekly News Service
E&MJ is proud to offer its weekly news service for our loyal readers. Sign up for our Email Newsletter to keep up-to-date with the latest news the mining industry has to offer. Or, simply text ENGINEERING to 22828 to get started!
| U.S. Sets New Rock Dust Standard |
 |
 |
 |
| Thursday, 11 August 2011 09:31 |
|
The U.S. Mine Safety and Health Administration (MSHA) announced a new final rule that requires coal mine operators to maintain the percentage of incombustible content of the combined coal dust, rock dust and other dust at 80% in all accessible areas of underground bituminous coal mines, as well as an additional 0.4% for each 0.1% of methane where methane is present in any ventilating current. The new rule increases the total incombustible content for all areas of the mine, other than return air courses, from 65% to 80%. |
