Leg press, deadlifts, RDLs, lunges, leg extensions, leg curls, hack squats, split squats. All those will hit your legs, plus there variations. Do some sprints, run hills, stairs, those will hit your legs. Im sure there are more lifts I can't think of this second as well.
While natural gas occurs in nature as a mixture of methane and other gases, propane is actually a byproduct of both petroleum refining and natural gas processing.
Natural gas is made up of several gases including propane, butane, ethane and mostly consists of methane. While propane is a part of natural gas in its raw state, it is a hydrocarbon separated from the other gases at gas processing facilities. The propane that is separated during this process is stored and sold to propane dealers for end use by consumers.