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Showing: 1 to 10 of 498 matches for "Four Corners Mine" where society/organization is "NIOSH"  Page   1   2   3   4   5   6   7   8   9  next TITLE Underground Mine Communications (In Four Parts) 4. Section-To-Place Communications  SUMMARY ... (In Four Parts ... FIGURE 4. - Typical ranges in unobstructed mine tunnels ... Corners present obstacles to the propagation of UHF radio waves down ross tunnls, thereby ... PUBLISHED 1977 TITLE Underground Mine Communications (In Four Parts) 1. Mine Telephone Systems  SUMMARY ... follows: Pitt...;burgh Mining and Safety R.'-:'earch C('nt<:>r Underqround mine communications (in four parts) : 1. Min(' telephone ... PUBLISHED 1977 TITLE An Interactive Computer System For Evaluating Coal Mine Illumination  SUMMARY ... Once this is done, the user enters the mine entry dimensions and issues a command to ... squares. Levels are provided for the four corners of ... PUBLISHED 1978 TITLE Mine Power Systems Research (In Four Parts) 4. Transients And Enclosures  SUMMARY ... Ullill'd :-ilalc':-;. Bureau of Iilll'" Mine power systems research (In four parts) : 4. Transients rJnd enclosures / by staff-Min ing Research. ... PUBLISHED 1979 TITLE Use Of Prestressed Precast Shaft Supports, Banner Mine, Lordsburg, N. Mex. ? Introduction And Summary  SUMMARY ... 7. General assembly of set showing bolted corners, post, hang ... At the Banner mine pre- str98ed concrete was more ... ates and dividers \lere cast sCllid with four 1/2 ... AUTHOR Look, Allen D. PUBLISHED 1957 TITLE Remote Sensing Of Mine Waste  SUMMARY Page 1. Bureau of Mines Information Circular/1987 Remote Sensing of Mine Waste ... Page 2. Information Circular 9152 Remote Sensing of Mine Waste ... AUTHOR Boldt, C. M. K. PUBLISHED 1987 TITLE Improved Coal Mine Entry Intersection Stability - Objective  SUMMARY ... type roof falliin four-way coal mine InterleCt.lona. ... entries to reduce the number of rounded corners, ... anism of failure, considering the four critical parameters ... PUBLISHED 1990 TITLE Load Capacity And Stiffness Characteristics Of Screen Materials Used For Surface Control In Underground Coal Mines  SUMMARY ... in the Mine Roof Simulator (MRS) at the NIOSH Pittsburgh Research Laboratory (PRL). With this test set up, the screen is bolted at four corners of the frame ... AUTHOR Dolinar, Dennis R. TITLE Properties Of Petroleum From The Four Corners Area Of Arizona Colorado, New Mexico, And Utah - Summary  SUMMARY ... PROPERTIES OF PETROLEUM FROM THE FOUR CORNERS AREA OF ARIZONA COLORADO, NEW MEXICO, AND UTAH ... THE FOUR CORNERS AREA OF ARIZONA COLORADO, NEW MEXICO, AND UTAH ... AUTHOR Wenger, W. J. PUBLISHED 1960 TITLE Coyote-Hole Primary Blasting Dresser Trap Rock Co. Dresser, Wis. ? Introduction  SUMMARY ... The mine has been in peration since 1914 and under the present ownership since 1949. ... r ed near the center at the round and angled to the four corners of the ... AUTHOR Marshall, L. G. PUBLISHED 1959 Showing: 1 to 10 of 498 matches for "Four Corners Mine" where society/organization is "NIOSH"  Page   1   2   3   4   5   6   7   8   9  next Search Again