unpumpable

Volcanic ash and grit accumulations in the system form unpumpable masses forcing equipment and operational failures.

Volcanic Ash -- Effects on Waste Water and Mitigation Strategies 2009

Volcanic ash and grit accumulations in the system form unpumpable masses forcing equipment and operational failures.

Volcanic Ash -- Effects on Waste Water and Mitigation Strategies 2009

Komba asked suspiciously why we did so, and as I was determined to show this unsympathetic person that there were others as unpumpable as himself, I replied that it was the god of our tribe, which we set up there to be worshipped, and that anyone who tried to insult or injure it, would certainly die, as the witch-doctor,

Allan and the Holy Flower Henry Rider Haggard 1890

Arundel Dacre was proverbially unpumpable; but Peacock Piggott, whose communicative temper was an adage, how came he on a sudden so diplomatic?

The Young Duke Benjamin Disraeli 1842