It is a part of The Kitchen by Arnold Wesker. The paragraph this sentence is used in is the following:
Michael. Quite right...who'd want to kill me? Young man in his teens, all the world in front of him. Look at it... a lovely sight, isn't it ? Isn't she beautiful ? A bloody great mass of iron and we work it — praise be to God for man's endeavour — what's on the menu today ? I don't know why I bother — it's always the same.
Does he mean kitchen utensils by "great mass of iron"? Does "we work it" mean "we work with these"? Like they figure it out? How about "man's endeavour"? Does he refer to their hardwork in the kitchen?