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| Frog Switch & Manufacturing Company |
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| The Frog, Switch & Manufacturing Company is a world leader in the manufacture of manganese steel castings for the crushing and grinding industry. An unmatched reputation for quality and service has helped us prosper through the industry's most difficult times. A long and fascinating history has led the company to where we are now – a respected, worldwide leader in the industry. |
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| Frog Switch & Manufacturing Company |
| Carlisle, Pennsylvania |
| USA |
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