Mechanical Excavation Systems (in Three Parts) 1. Drill-Split Narrow-Vein and Longwall Mining

Details

• Personal Author:
  Jude, Charles V. ; Lombardi, John A.
• Description:
  In this U.S. Bureau of Mines report, two drill-split mechanical excavation mining system concepts are described, costed, and cost compared with conventional drill-blast mining systems. The concepts for the two drill-split mechanical excavation mining systems presented are (1) a method for steeply dipping narrow veins 0.6 to 1.2 m wide and (2) a longwall method for flat-lying tabular ores. In the proposed systems, 70 to 80 pct of the ore is disposed of underground as backfill. For sortable ores, face area crushing, sorting, and direct stowage of run-of-mine waste and low-grade ores are proposed. The underground sorting and stowing of waste reduce materials handling, processing, and waste disposal costs by reducing the quality of ore transported to the surface by 70 to 80 pct (by volume). [Description provided by NIOSH]
• Subjects:
  Construction Industry Mining Occupational Health Safety
• Keywords:
  Backfills; Blasting; Mining-equipment; Tunneling-machines; Coal-seams; Longwall-mining; Excavation-equipment; Mineral-industries
• Series:
  Mining Publications
• Subseries:
  Information Circular
• Document Type:
  Text
• Genre:
  Pamphlet or Booklet
• Place as Subject:
  Colorado ; OSHA Region 8
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRC - Denver Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-21
• NIOSHTIC Number:
  nn:10005122
• NTIS Accession Number:
  PB94-178100
• Citation:
  Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9392, 1994 Jan; :1-21
• Federal Fiscal Year:
  1994
• Peer Reviewed:
  False
• Source Full Name:
  Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9392
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:de115631e14b7bbbda94702464136d6322762f478524f11969bef2e76e14296d9831b69a882602400ea3d425f526ef6adfec2694a877778d448c676681ef821a
• Download URL:
  https://stacks.cdc.gov/view/cdc/235923/cdc_235923_DS1.pdf
• File Type:
  [PDF - 5.46 MB ]