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iii iiiiiiiiiiiu iii <br />To: MathewsD~COAL <br />Cc: <br />Bcc: <br />From: CrosbyE~COAL©DNRML <br />Subject: McClane Mine; Bonding <br />Date: Monday, January 5, 1998 21:07:00 UTC <br />Attach: <br />Certify: N <br />Priority: Normal <br />Defer until: <br />Expires: <br />Forwarded by: <br />Dan, 2 received a fax from John Walters regarding concrete demolition costs <br />for the McClane portals. John is proposing to place plastic pipes in the <br />cast concrete whereas the pipes can be filled with dynamite and detonated. <br />John will break up the concrete into panels that can be pushed in the mine <br />portals for disposal. He came up with an elaborate plan to do this work, <br />with diagrams. I spoke with Renner about the reality of such a task. <br />Renner said that it is very difficult to stack large pieces into an entry, <br />especially when the pile becomes higher. In reality, It will be very <br />difficult to stack the pannels inside the portals as described by John. <br />Based on Renner's experience at Coal Basin, he estimated a cost of $17 to <br />$20 per yard to demo concrete, including a disposal cost. John estimated a <br />cost of $4,958.88 for the demo work, which is close to Renne is estimate <br />per cubic yard ($4,595.00). It is quite a bit less than MEANS cost, but we <br />also need to consider that roughly 30 feet of the concrete will be covered <br />under backfill when reclaimed. I am inclined to go with John's cost <br />because it is slightly higher than $20 per cubic yard, and MEANS is rather <br />excessive for what he is planning. I am not really estimating for the <br />pannels, because I don't think it can be done. Zts your call on that one. <br />I will be out of the office for the next two weeks, only in a day or two, <br />so leave me an e-mail or voice message if you have any questions. -Erica <br /> <br />