| Business Name | Address | |
| Will Clark Electric | 19747 Porto Fino Rd Tuolumne, CA 95379 |
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| J L Case & Sons | 20644 Green Acres Dr Sonora, CA 95370 |
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| P H Electric | Sonora, CA 95370 |
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| Barry Electric | 22240 Fortuna Mine Rd Sonora, CA 95370 |
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| P C Electric | 17443 Smokey River Dr Sonora, CA 95370 |
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