Motor Vehicles and Heavy Equipment ; Ship and Boat Building and Repair ; Part XVI but some injury occurs at a concentration of 100 ppm At higher concentrations rats exhibited haemorrhaging in the lungs congestion of the viscera liver damage haemoglobinuria and marked erythrocyte fragility extraction of gold and silver from ores
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Get PriceLearning Competencies The learners will be able to describe how ore minerals are found mined and processed for human use S11ES Ic d 8 and cite ways to prevent or lessen the environmental impact that result from the exploitation extraction and use of mineral resources S11ES Id 9
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