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Ore mining methods comprising descriptions of methods of support in extraction of ore
- "Ore mining methods comprising descriptions of methods of support in extraction of ore"@en
- "Ore mining methods, comprising descriptions of methods of support in extraction of ore, detailed descriptions of methods of stoping and mining in narrow and wide veins and bedded and massive deposits including stull and square-set mining, filling and caving methods, open-cut work and a discussion of costs of stoping"
- "Ore mining methods comprising descriptions of methods of support in extraction of ore, detailed descriptions of methods of stoping and mining in narrow and wide veins and bedded and massive deposits including stull and square-set mining, filling and caving methods, open-cut work and a discussion of costs of stoping"@en
- "Ore mining methods"@en
- "Ore mining methods"