Schmidheiny inherited Eternit, which manufactured a line of construction products that had begun in 1903 with asbestos-reinforced cement, at age 37.

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At a factory in the suburbs of Delhi, raw Canadian asbestos is prepared for mixing into cement.

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He says the asbestos industry must be aware of how their cement sheets are really used.

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The asbestos dust that can be so deadly is released when cement sheets are sawn into convenient lengths or drilled with holes so they can be fixed into place.

BBC: News Online