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:~..: <br /> <br />PIONEER CANON PROJECT <br />work Narrative <br />The fire investigation and control poject will consist of two phases. The <br />second phase will be undertaken if it is found feasible after investigation in <br />phase I. <br />Phase I Work: <br />A drilling program has been developed from information obtained from work which <br />was completed under the previous Coal Fires Project in the 10th Grant. It is <br />anticipated that 24-30 rotary drill holes with depths from 40 to 150 feet will <br />be needed to refine existing information and define the fire. Each drill hole <br />will penetrate the Double-Dick mine workings and coal in the "Brookside" seam <br />to determine remaining coal and void amounts. Samples of the mine atmosphere <br />may be obtained and pressure differentials within the mines may be determined. <br />Drill holes will be sealed by circulating a bentonite abandonment mud upon <br />retreat. Thermocouples will be installed in some holes to monitor temperature <br />variations. The annular volume in thermocouple holes will be backfilled and <br />the drillhole sealed with a threaded air-tight cap. No air will be allowed to <br />enter or circulate into the drilled holes in an uncontrolled fashion. Several <br />subsidence craters and two steaming vents will also be backfilled during the <br />project work. <br />Information developed in this phase will be used to develop the pilot project <br />in phase two, or alternatively, evaluate other abatement techniques which <br />appear more feasible. <br />