Pit & Quarry, August 2018
STACKING www kpijci com Situated at the center of San Diego County Hanson mines aggregate in cells before its partner Republic Services converts those areas to landfill consistently saleable product makes up the plant For example the sites primary crusher is an S4800 cone featuring two 8 ft x 20 ft triple deck inclining Deister screens The secondary crusher is a Sandvik H6800 cone thats supported with two 8 ft x 20 ft Deister screens A REMco Super 100 impactor is used to break soft particles In its wash plant Hanson has a 6 ft x 20 ft Deister flat deck screen that helps produce washed manufactured sand Were washing probably 10 percent of our manufactured sand right now Thompson says The plant does make a washed sand that we can use in our slurry mixes Hanson also employs the services of LB3 Enterprises a contractor specializing in mass grading and underground utilities for assistance in rock excavation In addition Hanson Santee leans on AOM aggregate operation management as a tool to enhance operations The Managing waste material is a bit tricky as it represents about 60 percent of mined material technology helps to diagnose causes of equipment breakdowns when the plant is running tonnages plants are running man hours into the plant and other key performance indicators AOM gives us really good data to make good decisions on how to better run and maintain the plant increase availability and those types of things Thompson says Its as close to live as we can get so the guys actually running the plant are putting in the information as the plant is running pitandquarry com August 2018 PIT QUARRY 33
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