Oil shale gas could be used as a substitute for natural gas, however at the current price level this is not economically feasible.
However, at the current price level, this is not economically feasible. Oil shale gas can also be used as a substitute for natural gas.
Oil shale gas can also be used as a substitute for natural gas. However, at the current price level, this is not economically feasible.
Oil shale gas can also be used as a substitute for natural gas. However, at the current price level, this is not economically feasible.