Laserfiche WebLink
<br />Vehicles mobilized for this project will include: a truck-mounted <br />rotary-air drilling rig, a water truck with a 2,500 gallon capa- <br />city, a rig service vehicle, a 3/4-ton pickup, a geophysical log- <br />ging truck and a crawler-type bulldozer. <br />The majority of the work will be done using rotary-air methods. <br />Water, mud or foam will be injected into the hole to maintain sta- <br />bility if necessary, and water will be used to core the coal. Hole <br />diameters are generally 4-3/4" to 5-5/8" and core diameters are 2z" <br />to 3". Water will be taken from the Highline Canal or McClane Can- <br />yon Mine and stored at the sites. Based on information contained <br />in the Munger Canyon Mine Application, no major aquifers are anti- <br />cipated to be encountered during the drilling program. <br />During rotary-air operations, samples will be taken from the drill <br />cuttings at 10' intervals, described and stored in cloth bags. Coal <br />cores will be measured, described and stored in water-tight contain- <br />ers for later analysis. <br />Geophysical probes will reflect natural gamma, gamma density, resist- <br />ivity and hole diameter. <br />New trails to drilling sites will be constructed by a crawler-type <br />bulldozer (proposed roads are shown on the map). In general, roads <br />will be constructed with a minimum disturbance to slopes and vege- <br />tation and, when possible, located on benches, ridges and flat slopes. <br />Water bars will be used to reduce risk of erosion. In the event top- <br />soil is removed in road building, it will be stockpiled away from <br />areas of activity and later used in reclamation. This first sec- <br />tion of access road, from the mine to the junction of the existing <br />road in Section 34, is proposed to be left unreclaimed. This road <br />will serve as access to the upper area during future exploration <br />and will be maintained to control erosion. The Reclamation Bond <br />