San Bernardino National Forest, Mountaintop Ranger District, California, Mitsubishi South Quarry Expansion Project

Riepilogo

Mitsubishi Cement Corporation is submitting to the San Bernardino National Forest and San Bernardino County, for permitting, a Plan of Operations and Reclamation Plan for the South Quarry. The South Quarry will total approximately 153.6 acres consisting of a 128-acre quarry, a 2.7 acre landscape berm, a 22.2-acre haul road 1.8 miles in length, and a temporary construction road of 0.7 acres. The South Quarry and haul road will be located almost entirely (147.0 acres) on 440 acres of unpatented claims owned by Mitsubishi Cement Corporation on the San Bernardino National Forest with approximately 6.6 acres of the haul road located on Mitsubishi Cement Corporation fee land where it enters the existing East Pit. Current estimates project the South Quarry could feed the cement plant for approximately 120 years. No change to the throughput or operation of the Cushenbury Cement Plant is proposed as part of this project. Based on drilling conducted during the winter of 2009 and 2010, the South Quarry site has estimated proven and inferred reserves of over 200 million tons of mostly high to medium grade limestone. This higher grade limestone would be blended with lower grade limestone excava