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n-T- <br />~' . - J <br /> <br />blue <br />ribbon <br />'~ coal <br />company <br />Mr. Tom Gillis <br />Reclamation Specialist <br />Mined Land Reclamation <br />1313 Sherman Street <br />Denver, CO 80203 <br />Re: Blue Ribbon Atine <br />Request for Miner Revision <br />Ventilation Fan Replacement <br />Your File No. C-047-81 <br />Dear Tom: <br />~II II~~I~~I~~~~~ ~I~ <br />blue ribbon coal company <br />p.o box 58 <br />tlelta, culorado 81416 <br />(3031 8147561 <br />November 13, 1981 <br /> <br />~;!.': 1 .. 1`181 <br />r <br />~~!'IfJLU Lip,^;I, ;°~-rl °acF,.T10iu <br />r; , <br />Blue Ribbon Mine has placed an order for a new main mine f.an. The <br />fan is a Spendrup Model AMP-2000-80-12. The correct fan location is <br />indicated on the attached map which is a reduced version of Exhihit A <br />from the Permit Application. This is the same indicated location of the <br />fan that is now in use aC the mine. A concrete structure will connect <br />the existing portal to the new fan. I have reviewed the descriptions of. <br />our surface facility in the existing and proposed permit applications and <br />I believe the wording will not require any modiCica[ions to correctly <br />handle the new fan. Mention of the fan can be found in General Requirements, <br />2.04.3; the Operation Plan, 2.05,3; and the Reclamation Plan, 2.05.4 <br />regarding the removal of all surface facilities and sealing the mine <br />entrances. <br />The new concrete structure mentioned in conjunction with the fan <br />installation essentially consists of an eight foot high concrete extension <br />from the exhaust portal entry. The reinforced formed concrete walls would <br />extend approximately 35 feet from [he portal and be bull[ on concrete <br />footers. The end of the concrete structure will be formed by a concrete <br />block weak wall with the fan being connected by metal duct work to the <br />northwest formed concrete wall. The top of the portal extension will be <br />a concrete slab. A concrete pad will be poured as a fan foundation. The <br />complete fan installation will be in accordance with Pfine Safety and <br />Health Administration's regulations. <br />1dST/ct <br />cc: Bruce Collins <br />Marv Adam/Paul Mohr <br />Sincerely, <br />~~1.~.~a-. S I u~~ <br />4lillinm S. 'I'^tc <br />Senior engineer <br />i i I h Y <br />