Keystone Mining Services provides complete strata scope analysis of the immediate roof. The periscope-like stratascope allows our experts to travel underground utilizing it in holes drilled in predetermined locations or in potential problem areas. Our years of expertise in reading stratascope data ensures that we know exactly what rock, coal or partings make up the immediate strata. Our years of experience in analyzing these strata enables Keystone Mining Services to make the proper recommendations on how to effectively control the roof strata.