Laserfiche WebLink
feet in height . In order to be safe , this work must proceed very <br /> cautiously . Some loose material is available from the bench area <br /> itself , however , large portions of the bench area are in competent <br /> rock . <br /> It is not logical to blast down more material from above the <br /> highwall since the slopes continue upward at extremely steep <br /> angles . A large area would have to be disturbed to obtain <br /> additional fill . <br /> The fill material from the upper edge of the spoil slope, plus <br /> 1 oose mater i a l ava i t ab l e on the bench itself , plus blasted concrete <br /> foundations , plus topsoil from nearby borrow areas results in the <br /> amount of "reasonably available material " for backfilling . There <br /> are no other areas within a reasonable distance where fill material <br /> can be obtained . The maps titled "Mine #3 Reclaimed" , etc . show the <br /> total volume of reasonably available material as the fill volume <br /> printed on the map . The cut volume shows what material can be <br /> excavated from the bench and from the top of the downspoiled slope . <br /> Each set of portal maps also corresponds to a cross-section which <br /> shows the original terrain , the highwall and the proposed <br /> backfilled slope, utilizing all available spoil . <br /> It must be pointed out that the volumes shown on these maps are <br /> intelligent estimates taking into account all knowledge of the <br /> sites at this time . When the work is undertaken , the amount of <br /> reasonably available material may be slightly higher or lower than <br /> the estimates shown on the maps . <br />