Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <pb pagenum="123"/>
            <p type="main">
              <s>If a vein is soft and the rock of the hanging and footwalls is weak,
                <lb/>
              a closer structure is necessary; for this purpose timbers are joined together
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              in rectangular shapes and placed one after the other without a break. </s>
              <s>These </s>
            </p>
            <figure number="57"/>
            <p type="caption">
              <s>A—WALL PLATES. B—DIVIDERS. C—LONG END POSTS. D—END PLATES.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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