Comprehensive Industry Document Stone Crushers
The crushed stone industry began the hard way. Stone was broken by hand up until 1858, when Blake invented the Stone Breaker. It is only through great ingenuity that the quarrying industry has been able to come up with new equipment and new techniques to handle the enormous increase in demand for crushed stone products,.
Tools Equipment used in the Stone Industries in the United States Foreign Countries up through 1939 in The Stone Industries Dimension Stone, Crushed Stone, Geology, Technology, Distribution, Utilization, by Oliver Bowles (Supervising Engineer, Building Materials Section, United States Bureau of Mines), New York 2nd ed., New York McGraw.