Thus, it had to be above the cost of inputs such as natural gas and coal.

Uranium is different from conventional energy resources, such as oil and coal, in several key aspects.

The Institute helped in determining which land was would be most rich with resources such as minerals and coal.

Open cars are used for commodities such as coal, which can get wet and dry out with less harmful effect.

Some kits would teach about a specific topic, such as coal.

Most of our energy comes from fossil fuels such as coal, oil and natural gas.

In turn, the increase will add to the value of current research into alternatives, such as coal.

The second example concerns the availability of resources such as coal and iron.

No, nuclear power does not kill any more than a traditional source such as coal has killed and still kills.

The people found ample supplies of minerals such as salt and coal.