A Short History of the Joshua Hendy Iron Works: Joshua Hendy came to the United States from Scotland in 1836. As a young man he learned the machinist's trade in the East and in 1851, at the age of 33, he traveled to California, probably hoping for riches in the gold fields.
A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated.
Summary Statement . This study examined government investigation reports of work-related deaths and injuries in 1986- 2002 to learn the public health implications of a widespread lack of rollover protective structures and seatbelts on compactors.