Comparison of coarse coal dust sampling techniques in a laboratory-simulated longwall section

comparison of the amount of debris extruded apically in two rotary techniques: flexmaster and m2

چکیده ندارد.

Automation in Longwall Coal Mining - A Review

Coal is an important fossil fuel and will also be for the next decades [1]. The only way to achieve the challenges faced by the coal industry is to reduce production costs by improving productivity. Improvement of productivity has become an important goal for today’s coal industry in the race to increase price competitiveness. In recent years, underground mining method is becoming popular becau...

Longwall Respirable Dust Simulator

ROBERT A. HANEY Mine Safety and Health Administration, Pittsburgh Health Technology Center The effectiveness of these dust control techniques has been evaluated primarily through the use of instantaneous dust measurements. These instantaneous dust measurements give a relative indication of whether dust control and -------------------~ employee exposure improve or deteriorate. Because the instan...

Nail Sampling techniques for Diagnosing of onychomycosis-Section 10

The clinical suspicion of onychomycosis based on appearance of the nails, requires fungal culture for confirmation. The unfamiliar terminologies used in reporting culture results leads to misinterpretation and hamper treatment decision. Accurate laboratory diagnosis of onychomycosis depends on the quality of sample collection, and reporting by microbiologist. Site selection for sampling depends...

Airborne dust in coal mines: the sampling problem.