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Benchmarking longwall dust control technology and practices.

Authors
Rider-JP; Colinet-JF
Source
Min Eng 2011 Sep; 63(9):74-80
NIOSHTIC No.
20039782
Abstract
Significant advances in longwall mining technology and equipment have occurred over the last decade. By the late 1990s, longwall mine output accounted for 40% of all underground output in the U.S. and today longwall mines account for approximately 50% of coal produced underground in the United States. A 51% increase in average shift production rates has occurred over the last 15 years. This increased longwall productivity has meant that far more dust is being produced and controlling respirable coal dust presents an ongoing challenge for coal mine operators. The National Institute for Occupational Safety and Health (NIOSH) conducted a series of benchmark surveys at longwall operations across the country to identify current operating practices and the types of controls being used. Gravimetric and instantaneous dust sampling was completed to quantify the dust levels generated by major sources on the longwall section and to identify different control technologies in use today. Substantial reductions in dust levels were realized at sampling locations on the face when compared with ongwall surveys conducted in the 1990s. Results from the underground dust surveys and current longwall dust control technology and operating practices will be discussed.
Keywords
Mining-industry; Underground-mining; Coal-mining; Engineering-controls; Dust-control; Dust-control-equipment; Dusts; Dust-particles; Respirable-dust; Mining-equipment; Longwall-mining; Airborne-dusts; Coal-dust; Dusts; Engineering-controls; Particulate-dust; Respirable-dust
CODEN
MIENAB
Publication Date
20110901
Document Type
Journal Article
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Identifying No.
B10262011
Issue of Publication
9
ISSN
0026-5187
NIOSH Division
OMSHR
Source Name
Mining Engineering
State
PA
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