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gravel

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    Could gravel roads cause lung cancer? North Dakota scientists think it might...
    1239798540

    According to the Associated Press, certain gravel roads in western North Dakota use erionite, a mineral that is mined in the Killdeer mountains. Erionite forms wool-like fribrous masses among rock formations and has properties similar to asbestos. Scientists suspect that, like asbestos, erionite ...

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    Solving Michigan's decrepit roads by going back to gravel?
    1206541740

    The usual line from a preacher at a burial is "Ashes to ashes, dust to dust". Well something along those lines may soon be happening to some roads in Michigan. After my recent treatise on the process for (de)constructing roads in the Great Lakes state, an article turned up in the Lansing State ...

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