Examples of nonrenewable energy resources would include oil and coal.
Initial freight services would have included agricultural produce and coal.
These items included coal, steel and cement among many others.
These goods, which included coal, were primarily for local communities along the route.
There is another important class of energy commodities which includes electricity, gas, coal and oil.
Major natural resources include diamonds, gold, and brown coal.
That includes coal for fuel, and building materials when he renovated his home.
The only way to avoid that threat in future is with a strategic energy mix which also includes coal and nuclear power.
These do not include nuclear power, oil or coal!
It does not include natural gas, nuclear energy or clean coal.