Results 141 to 150 of about 12,068 (222)

Stratigraphy of a Pennsylvanian Deltaic Sequence in Russellville, Arkansas [PDF]

, 1982
Fritsche, Ken, Moyer, Christopher F.
core   +2 more sources

Coal/rock interface detection by sensitized pick, part A [PDF]

In order to increase the operating margins of the detector for safe, reliable operation under difficult in-mine conditions the transmitted signal strength was increased to provide additional signal margin for in-mine conditions and the transmitter ...
Erkes, J. W., Wu, P. T. K.
core   +1 more source

Design of fault water-resisting coal pillars based on deep-beam analysis: A comparison of two analytical methods. [PDF]

PLoS One
Wang B, Zha W, Lu H.
europepmc   +1 more source

Report of activities of the advanced coal extraction systems definition project, 1979 - 1980 [PDF]

During this period effort was devoted to: formulation of system performance goals in the areas of production cost, miner safety, miner health, environmental impact, and coal conservation, survey and in depth assessment of promising technology, and ...
Isenberg, L., Lavin, M. L.
core   +1 more source

Study on the mechanism and prevention techniques of dynamic disaster in nearly vertical extra-thick coal seams. [PDF]

Sci Rep
Zhang Y, Li Q, Li L, Zhang J, Liu C, Yue H.   +5 more
europepmc   +1 more source

Study on reasonable position of mining roadway under repeated mining overburden structure in shallow buried close distance coal seam: A case study. [PDF]

Sci Rep
Miao K, Tu S, Tu H, Tang L, Zhao H, Guo B, Lv K, Ma Y.   +7 more
europepmc   +1 more source

Study on the mining stress field distribution law beneath isolated coal pillar in close coal seam and reasonable location of the roadway. [PDF]

Sci Rep
Shu S, Wang W, Liu C, Yuan C, Ma Y, Tian X, Du R, Ge S.   +7 more
europepmc   +1 more source

Numerical simulation study on the cooperative movement of overburden and fracture healing mechanisms in shallow-buried coal seams. [PDF]

Sci Rep
Pang C, Kong Z, Chen L, Xu Z.
europepmc   +1 more source

Study on the Failure Law of Overlying Strata in Thick Coal Seam Mining under the Condition of Shallow Burial Depth, Thick Loose Layers, and Thin Bedrock. [PDF]

ACS Omega
Ren K, Li G, Zhang J, Zong B, Yan G, Liu H, Guo G, Wang B, Wang Y.   +8 more
europepmc   +1 more source

Seismic reflection characteristics and genesis of goafs and underlying coal seams. [PDF]

Sci Rep
Shan R, Nie A, Cao X, Zou Y, Zhu W.
europepmc   +1 more source