the plant should be shut down and locked out. D. Unstable material that could fall causing injury must be cleared away or made safe. The operator should select a bar that is a suitable length for the job and be positioned so as not lose balance.Product introduction:The mobile cone crushing plant is a series of new rock crushing equipment developed by our company which greatly expands the conceptual field of coarse crushing and fine crushing operations.Its design philosophy is to stand in the customer's position to eliminate the obstacles of crushing ground and environment and complex infrastructure configuration.Limestone quarry crusher plant making road base.The Crushing Plant operator must monitor the cone crusher power draw displayed on the cone crusher ammeter. The ammeter should show no major fluctuations and should read approximately 100 amps. An excessively high power draw on the cone crusher indicates the cone is being overloaded,