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~ Fi~EIVE ~~~ ~~~~~~~~~~~~~~~~ JAN 0 5 2001 BALAZ $e ASSOCIATES, INC, UivisianafMineralsandG~. 1005 N. 12th St., #211 Grand Junction, CO 81501 Phone: (970) 263-9733 January 2, 2001 Mr. Gregg Squire Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, CO 80203 Re: Mamm Creek Gravel Pit Roaring Fork Resources, Inc. File No. M-2000-113 Dear Gregg: Please find enclosed the folk on our initial response to his se to Mr. Tom Schreiner's review 1.2000. It is our understandine t additional detail is beine requested concerning the wash plant. The operator intends on having portable crushing and dry and .wet screening p ants.m pit to process the run of mine material. The crushing operation utilizes a jaw crusher.as a primary and a cone crusher as a secondary. The primary (jaw) crusher feeds a dry screen deck that sorts the product. The oversize from this screen deck reports to the cone crusher. The remaining screened material from the jaw crusher is conveyed to in pit stockpiles. The cone crusher discharge reports back to the screen deck on the discharge side of the jaw for additional sizing. The products from the crushing operation are washed to meet market demand. The products from the wet screening operation are conveyed to in pit stockpiles via either belt or screw conveyors. The sand is conveyed 6y the screw conveyor. The wet screen plant is rated at 200 tons per hour and can use between 800 and 1,200 gpm when operating. Historically, approximately twenty-five percent of the crushed product has been washed. The operator keeps the in pit crushing and wet screening operation separate to avoid downtime to a portion of the in pit crushing and screening process if the other portion is broken down. Specifically, if the cone crusher is down then the wet screen (processing) plant can still operate out of feed stockpiles and if the wet screen plant is down then the cone crusher can continue to operate. The water supply for the in pit screening is existing irrigation water rights or additional water shares purchased under the augmentation plan. The State Engineers office is being contacted to see if the existing water rights need to be amended to include industrial, i. e. gravel processing, as an approved use. If this change is required, then the operator will provide proof of the water right use change approval to the Division's Denver olTice when it is received from the State Engineer's office.