Final Report

Jaw Crusher The Model MS-3042 jaw crusher involved in the accident was manufactured in November 1995 by Minyu Machinery Corp., LTD, located in Taiwan, Republic of China. The jaw crusher was the primary component of a portable rock crushing unit that included a vibrating rock feed table.

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DEPARTMENT OF LABOR MINE SAFETY AND HEALTH …

APPENDIX D – Persons Participating in the Investigation 12 APPENDIX E – Danger Sign 13. 1 . ... The crusher is a Hewitt-Robins 42 x 48-inch Grizzly-King Extra Heavy-Duty Jaw Crusher, manufactured in 2000. The crusher has a frame assembly weight of 62,000 pounds and a jaw assembly weight, including flywheels, of 58,000 pounds for a combined ...

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Laboratory abrasive wear tests: investigation of test …

Several investigators believe that the jaw crusher test gives the closest correlation to wear that occurs on earth-penetrating equipment, such as excavator teeth, power shovel buckets, scoops, and grader blades, as well as real jaw crusher wear. ASTM committee G.2 has developed a new standard practice for the jaw crusher gouging abrasion test [18].

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Optimization of Jaw Crusher

the results of an investigation of the feasibility of using point load-deformation-failure (PDF) relationships along with ... jaw crusher with constant toggle plate thickness and length. And the width of the toggle plate is considered at 100, 400,800, It is …

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[PDF] Investigation of the jaw crusher operation with …

The condition for the appearance of additional dynamic forces in the presence of gaps in the journal bearings of the jaw crusher is determined. The design of the backlash eliminator equipped with pneumatics is described. It was experimentally established that the use of pneumatic devices for backlash elimination in the interfaces of the moving links, using journal bearings, during the ...

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MSHA

MSHA conducted the investigation with the assistance of mine management and employees. DISCUSSION Location of the Accident The accident occurred at the primary jaw crusher, located in the plant area. Jaw Crusher The jaw crusher was a model 3042 manufactured by Cedar Rapids. The jaw width was 42 inches.

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Jaw Crusher

Crushers. Barry A. Wills, James A. Finch FRSC, FCIM, P.Eng., in Wills' Mineral Processing Technology (Eighth Edition), 2016 Jaw-crusher Construction. Jaw crushers are heavy-duty machines and hence must be robustly constructed. The main frame is often made from cast iron or steel, connected with tie-bolts. It is commonly made in sections so that it can be transported …

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