Laserfiche WebLink
Wise Hill Mine Fire Drilling Project <br />PROJECT WORK DESCRIPTION <br />Background Information <br />The Wise Hill Coal Mine Fire, also known as the Hart Mine Fire, has had several mine <br />fire abatement projects completed over the past fifteen years. The coal fire abatement <br />efforts have been ineffective in reducing the extent of the underground coal mine fire. <br />Recent site visits have indicated very dynamic fire conditions, with subsidence, venting, <br />and surface fracturing increasing in frequency and extent. DRMS is in the planning <br />phase of a mine fire abatement project, which will include a drilling program, and. <br />possible dig and quench or cut -off trench development. <br />Project Objectives <br />The objectives of this Task Order are to provide subsurface geologic descriptions which <br />will include the number and depths of coal seams in the study area, delineate the total <br />extent of the burning seams, and determine the seam(s) of coal that are currently burning. <br />Subsurface stratigraph_y and extent of the burning area, based on the results of the drilling <br />program, will be used to determine excavation volumes necessary for reclamation <br />activities at the site. Drill holes will be advanced using Down the Hole Hammer <br />(DTHH). <br />Site Conditions <br />The project area is located immediately east of Highway 13 approximately four miles <br />south of the town of Craig, in Moffat County, at 400 25' 41.73 "; 107° 38' 44.39 ", with an <br />elevation of 6,330 feet. The site is accessed. from Highway 13, via the Double Eagle <br />Mine entrance gate (see attached location map). The gate must remain locked at all <br />times. DRMS will provide Shannon & Wilson a key to the gate during the pre - drilling <br />site walkthrough. DRMS will work with the driller to establish logical locations for drill <br />hole placement in the field. Drillers will provide their own safety equipment, including a <br />gas meter capable of monitoring oxygen (O,) and carbon monoxide (CO) levels. Caution <br />should be exercised by drilling crews to ensure that the ground surface is stable. Use of a <br />heavy bar to check for ground stability in venting areas is recommended. High tension <br />power lines are located directly above the site, with two sets of power poles located <br />within the project area. Caution must be taken when maneuvering the drill rig in the <br />vicinity of the power lines and power poles. <br />TASKS <br />Task 1- Investa2atory Drilling <br />1.1 Drilling Equipment <br />Drilling subcontractor will provide an all terrain drill rig with winch if necessary <br />capable of accessing drill locations over steep and rocky terrain. The contractor <br />currently plans to use a CME 55 -300 track- carrier - mounted drilling rig (total <br />