Roll Crushers: Principles, Applications, and Benefits in …
The following extracts from a letter, dated Mar. 1, 1911, by a user of the giant rolls, who has had experience with jaw-crushers and three different makes of gyratory crushers, explain themselves: "Our rock comes in very hard pieces ; and at the time we made the change in our plant, a 42-in. opening was the largest gyratory crusher being ...
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