Darnall Works
... that the Darnall Works in Sheffield is the only remaining works to have produced crucible steel on a large scale?
... that the <b id="mwB-A"><a href="./Darnall_Works" id="mwB-E" rel="mw:WikiLink" title="Darnall Works">Darnall Works</a></b> in <a href="./Sheffield" id="mwB-I" rel="mw:WikiLink" title="Sheffield">Sheffield</a> <i id="mwB-M">(heat treatment workshop pictured)</i> is the only remaining works to have produced <a href="./Crucible_steel" id="mwB-Q" rel="mw:WikiLink" title="Crucible steel">crucible steel</a> on a large scale?