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  2. Advertising

    {No abstract available}

    Advertising : 133 words
  3. The Mining of Gypsum.

    In view of the fact that, thr world's annual production of gypsum exceeds 3,000.000 tons it is remarkable that, the world's gypsum deposits have never been made a subject of special, ...

    Article : 1,103 words
  4. Electrical Ore Finder.

    The electrical ore-finder has demonstrated its utility once more (says "St. James' Budget"). Following up its success at Coniston, where, it may be remembered, long-lost lodes of copper ...

    Article : 633 words
  5. Causes of Explosions in Air Compressors.

    In an article contributed to the journal of the Mechanical Engineers' Association, of the Witwatersrand, Mr. E Goffe gives the following description of the conditions under which ...

    Article : 2,020 words
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