Laserfiche WebLink
<br />t ; <br />be created in the 27-acre open area as the latter area is worked dotun. <br />The extraction will be "room and pillar" extraction under the super- <br />vision of the Bureau of Mines, with air ventilation openings as required. <br />This method will provide adequate surface support for the existing <br />surface. <br />B-2. For existing slopes, now, see attached ma.erial. <br />tiltimately, the 27-acre opening will, with a series of be:~ches and <br />faces, reach an approximate 5.3 acre site on the bottom o.E the deposit. <br />B-3. See B-2, above. <br />B-4. Reclamation on the berms, for "sight" rec:amation, will <br />begin as soon as the berms reach the desired conformation. estimated <br />at this time, based on market asstunptions, to be a maximum of 10 years <br />(see attached materials). <br />Reclamation of the 25-acre interior will lie basically <br />deferred until the underground materials are extracted, w:.th the excep- <br />tion of the uppermost areas, on which planting is expected to begin <br />in about 10 years. <br />B-5. No acreage has been disturbed under any o].d bill which <br />involved reclamation. It is all pre-existing any reclamation controls. <br />B-6. Available topsoil of 1500 to 2500 yards i;c stock-piled <br />on the site, for use on the berms. <br />B-7. Reclamation "plan" does not call for disturbance beyond <br />existing 27-acre opening and occasional air ventilation openings under <br />remainder. Balance of 53 acres will be basically preserved. <br />C. Reclamation. <br />C-1. Soil information furnished supplementally. Extremely <br />thin (0" to 6"); available will be used on berms. All adc~isors agree <br />no further information would be developed by additional testing, since <br />composition is coell-known (See Soil Conservation Report). <br />-2- <br />