Keystone Mining Services is unrivaled in its ability to apply detailed finite element computer modeling to our customers' complicated ground control problems. Our in-house JFEA (Jennmar Finite Element Analysis) system allows us to combine ground control factors including strata, tectonic stress, overburden, stream valley, and other pertinent factors to accurately predict future roof conditions. Our expertise allows us to start from a coarse model of actual mining parameters and to use this data to build a much more detailed model of future areas. This expertise gives Keystone Mining Services unmatched ability to provide accurate recommendations for primary support, secondary support, pillar design, longwall support, and a variety of other ground control issues.