But the discovery, fifteen years later, of enormous deposits of pitchblende in the old rock underlying Little America removed that obstacle.

We have enormous deposits of hydrocarbons--waxes, oils, and so forth.

As vegetable matter from these forests decayed, enormous deposits of peat accumulated, which later changed into coal.

There's an enormous circular deposit of shocked and fused coesite on that island.

The town has enormous deposits of petroleum resources and a lot of it is still not being tapped.

Deston found several enormous deposits of copper.

Also enormous deposits of graphite were discovered, and Buhl was one of the first mining investors.

Centuries of flooding and evaporation created enormous deposits of sedimentary rock.

Engineers still need to remove those layers, most of them metal grids, to reach the enormous deposit of fuel beneath them.

America has potentially quite large oil deposits, as well as enormous known deposits of natural gas.