The fracturing fluid makes the fissures expand.The electricity causes the shale to fracture.Energy companies drill holes around 1.5 miles deep.Lorries transport the gas to market.The natural gas flows to the surface and containers
collect it.Machines inject fracturing fluid into the bore hole.Conductors send electrical currents into the
Marcellus shale.They remove the fracturing fluid, and sand keeps
the fissures open.