mushet

Tungsten and its effects, however, did not become generally realized until Robert Mushet experimented and developed his famous mushet steel and the many improvement made since that date go to prove how little Mushet himself understood the peculiar effects of tungsten as an alloy.

The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel 1916

You don't expect a mushet of paper to stand as firm as an anvil-stone, when Taylor John's a-swinging up aloft. "

The Nebuly Coat John Meade Falkner 1895