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FR2720318A1
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Method for separating a piece from a block by propagation of a single crack.
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FR2615440A1
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Process for separating a piece of predetermined shape from a block of material, for example a rock
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FR2562155A1
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Method for breaking a solid mass
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FR2554384A1
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Process for cutting a mass of compact solid material
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ES323692A1
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Procedure and device for mineral loading. (Machine-translation by Google Translate, not legally binding)
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GB1142154A
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Method and device for the loading of ores
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GB1129836A
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A device for loading trucks by gravity
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