WebAug 25, 2024 · Highwalls can also provide a means of access to additional underground coal reserves when the stripping ratio becomes uneconomic for continued open cut mining. In … WebApr 4, 2024 · Highwalls have been the source of a number of accidents over the last decade, according to the Mine Safety & Health Administration. Photo: JazzIRT/iStock / Getty …
Highwall concerns : Pit & Quarry
Highwall is the unexcavated face of exposed overburden and coal in a surface mine. Additionally, highwall mining is another technique within mining practices sometimes conducted to recover additional coal. Presplit blasting facilitates highwall integrity and highwall safety. Learn more below. See more Pit and Quarrynotes there are several things that can prove hazardous in mining that involves highwalls. Geological structures can … See more Although it may look as stable as Mount Rushmore, by its very nature and purpose, a highwall can collapse without warning. People and machines may be buried in an instant. Highwall … See more Many of the hazards of highwalls in mining can be eliminated by having wise geotechnical planning. Next, safe mine operations need to be in place and followed. To ensure the integrity of highwalls, early … See more Constant vigilance is required to spot potential dangers and make corrections before a disaster occurs. Mining staff looks for structural weaknesses in the rock. Any movement … See more WebJan 20, 2024 · Site safety management. Application of drones for collecting visual data particularly of difficult and volatile areas such as deep and high terrains of a mine, highwalls, crests, and inside stopes. Further, aerial data capturing from blast sites, reduces the risk of exposure on the ground to such dangers. sinatra world we knew cd discogs
eCFR :: 30 CFR 77.1006 -- Highwalls; men working.
WebeCFR Content § 77.1000 Highwalls, pits and spoil banks; plans. Each operator shall establish and follow a ground control plan for the safe control of all highwalls, pits and spoil banks to be developed after June 30, 1971, which shall be consistent with prudent engineering design and will insure safe working conditions. WebSep 1, 2024 · Highwall mining pillar design is a direct function of coal strength, opening height, opening width, and depth of cover. These inputs are used to create design curves unique to each mine’s geologic environment to specify the web and barrier pillar widths necessary to achieve the desired safety factor (SF). WebJan 11, 2024 · Examine highwalls frequently and from as many perspectives as possible (bottom, sides, and top/crest). Look for signs of instability such as cracks, sloughing, loose ground, and for fall of material hazards such as large trees and rocks. Train all miners to recognize hazardous highwall conditions. sinatra world on a string live