Coal stoves provided heat while large pumps retrieved water from the lake.

The cutter drum was set into action by a rather large hydraulic pump.

Several large pumps were installed in an attempt to maintain its capacity.

Some of the largest and most powerful pumps are of this kind.

That would have required an even larger pump to be built.

She reached into the locker, pulling out a large pump 'n' spray can.

Water is pushed up a pipeline on the mountain using very large electric pumps in a pump house.

The center has installed large pumps that improved the amount of water available.

"No moving parts in the whole chamber except for large pumps, and not many of those," Lanier said.

"I don't see much of anything except those large pumps over there and some ridges in the crust."