... other gases (e.g., biogas, landfill gas, coal mine gas, sewage gas, combustible industrial waste ... digester gas,lpg, propane, CNG, coal mine gas, mine gas, coal mine methane, coal bed methane, coal bed gas, shale gas, oil shale gas ... Machine T2150 1 4.0 Acceptable Radial Drilling Machine Z3080x25 15 4.0 Acceptable Floor ... 30 4.0 Acceptable Production Flow: 1.Drilling 2.Boring 3.Planing 4.Lathing 5. ...