A bit hard to belive they would toss types in the water out of laziness given these types would be relatively expensive and the typesetters would need them to k

A bit hard to belive they would toss types in the water out of laziness given these types would be relatively expensive and the typesetters would need them to keep their job. The particular case seem to be a deliberate act of sabotage which sound more believable. Throwing worn-out or broken types and other tools in the river would probably be common though.