Laserfiche WebLink
Subsidence Handbook Volume III, Exhibit 15 <br />Mining Techniques <br />Longwall or conventional room - and - pillar mining with pillar extraction will be used <br />throughout the permit area. This will have little effect on access trails. <br />Repair Procedures <br />Repairs will be completed by appropriate earth- moving equipment when damage occurs. <br />Typically, the trails are maintained on an annual basis, as required, to access <br />environmental resource monitoring. Rockfall will be removed from roads and trails as soon <br />as the rockfall is noted. If a road affected by a rockfall is impassible due to inclement <br />weather, rockfall removal will be delayed. However, this delay is inconsequential because <br />the road will not be used by the Operator or the public due to inclement weather. <br />Persons using trails will be notified of any hazards. Those persons are typically the <br />Operator's employees, hunters or monitoring personnel. <br />Damage to Stevens Gulch Road would require earth- moving equipment to repair a crack or <br />sag in the road. Subgrade material and gravel surfacing will be added to the road as <br />necessary to make it compatible with undamaged sections of the road. <br />The Operator will post signs on Stevens Gulch Road and any other roads and trails that <br />lead into and over areas where secondary mining has or will occur within the next six <br />months. The signs will be posted along any roads where rock rollout is predicted. The <br />signs will be maintained for at least two years after mining. The signs will display the <br />following or similar warning. <br />1'J/_\:7 `I1► V <br />I=`11 d=1C71►Cr1_\►I_1:1=F_1 <br />THAT HAS BEEN MINED UNDER <br />WATCH OUT FOR FALLING ROCKS <br />ROAD MAY BE CRACKED OR DISPLACED <br />TRAVEL WITH CAUTION <br />The Operator will work in conjunction with the USDA -FS to close the Hubbard Creek trail <br />from time to time to protect the public from rockfall hazard. High risk of rockfall occurs <br />during the first two to four weeks of mining panels located where subsidence may affect <br />the cliff faces and slopes west of Hubbard Creek. The Hubbard Creek trail will be closed to <br />PR -14 46 06/14 <br />