Author: Jeff A. Magers
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 24
Book Description
This report summarizes the results from the subsidence research study completed by the U.S. Bureau of Mines at the Roadside Mine, Powderhorn Coal Co., Palisade, Co. This research was conducted from February 1981 to August 1985, with additional data obtained during July 1991, to evaluate residual subsidence. The Bureau studied subsidence at three district room-and-pillar sections at separate locations over the mine and determined the maximum subsidence values and surface subsidence profiles for each mining section. Maximum subsidence of 3.0 ft occurred over the room-andpillar sections, with overburden depths ranging from 50 to 600 ft. Surface tension cracks had occurred, and were still evident during the residual subsidence survey.
Surface Subsidence Over a Room-and-pillar Mine in the Western United States
Author: Jeff A. Magers
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 24
Book Description
This report summarizes the results from the subsidence research study completed by the U.S. Bureau of Mines at the Roadside Mine, Powderhorn Coal Co., Palisade, Co. This research was conducted from February 1981 to August 1985, with additional data obtained during July 1991, to evaluate residual subsidence. The Bureau studied subsidence at three district room-and-pillar sections at separate locations over the mine and determined the maximum subsidence values and surface subsidence profiles for each mining section. Maximum subsidence of 3.0 ft occurred over the room-andpillar sections, with overburden depths ranging from 50 to 600 ft. Surface tension cracks had occurred, and were still evident during the residual subsidence survey.
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 24
Book Description
This report summarizes the results from the subsidence research study completed by the U.S. Bureau of Mines at the Roadside Mine, Powderhorn Coal Co., Palisade, Co. This research was conducted from February 1981 to August 1985, with additional data obtained during July 1991, to evaluate residual subsidence. The Bureau studied subsidence at three district room-and-pillar sections at separate locations over the mine and determined the maximum subsidence values and surface subsidence profiles for each mining section. Maximum subsidence of 3.0 ft occurred over the room-andpillar sections, with overburden depths ranging from 50 to 600 ft. Surface tension cracks had occurred, and were still evident during the residual subsidence survey.
Surface Subsidence Over Longwall Panels in the Western United States
Author: Frederick K. Allgaier
Publisher:
ISBN:
Category : Longwall mining
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Longwall mining
Languages : en
Pages : 28
Book Description
Surface Subsidence Over Longwall Panels in the Western United States
Author: Alan J. Fejes
Publisher:
ISBN:
Category : Longwall mining
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Longwall mining
Languages : en
Pages : 32
Book Description
Subsidence Over Four Room-and-pillar Sections in Southwestern Pennsylvania
Author: Noel N. Moebs
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 32
Book Description
List of Bureau of Mines Publications and Articles ... with Subject and Author Index
Author: United States. Bureau of Mines
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 150
Book Description
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 150
Book Description
Bureau of Mines Publications and Articles ... (with Subject and Author Index)
Author: United States. Bureau of Mines
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 150
Book Description
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 150
Book Description
Subsidence from Underground Mining
Author: Fitzhugh T. Lee
Publisher:
ISBN:
Category : Mine subsidences
Languages : en
Pages : 38
Book Description
Publisher:
ISBN:
Category : Mine subsidences
Languages : en
Pages : 38
Book Description
Monthly Catalogue, United States Public Documents
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1064
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1064
Book Description
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1096
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1096
Book Description
Effects of Coal Mine Subsidence in the Western Powder River Basin, Wyoming
Author: C. Richard Dunrud
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 166
Book Description
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 166
Book Description