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Semi-portable engine
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<h2 id="applications">Applications</h2> <p>Many of these semi-portable engines were used for large civil engineering and mining projects, driving <a href="/facts/Water_pump/UtMn3Btt">water pumps</a>, <a href="/facts/Air_compressor/wclAqCt2">air compressors</a>, drilling and piling machinery. Some specialised engines were also built with drums for <a href="/facts/Winding_engine/HDneTKS6">winding</a> in mine shafts,<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> especially when exploratory shafts were being sunk. If a mine was successful and went into production, a full <a href="/facts/Engine_house_(disambiguation)/59UFzra6">engine house</a> could be built later. </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/House-built_engine/qDB8AgaT">House-built engine</a></li> <li><a href="/facts/Six-column_beam_engine/XcwEd1u7">Six-column beam engine</a></li></ul> Wikimedia Commons has media related to Semi-portable steam engines. <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Southworth, P.J.M. (1986). Some Early Robey Steam Engines. P.J.M. Southworth. pp. 29–32. ISBN 0-9511856-0-8. <a href="0-9511856-0-8" target="_blank">0-9511856-0-8</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>GB 4136, J. Richardson, published December 1873 <a href="https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=GB4136" target="_blank">https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=GB4136</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"1900 Robey undertype". Robey Trust. <a href="http://www.therobeytrust.co.uk/undertype%20phot.htm" target="_blank">http://www.therobeytrust.co.uk/undertype%20phot.htm</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Southworth 1986, pp. 32 - Southworth, P.J.M. (1986). Some Early Robey Steam Engines. P.J.M. Southworth. pp. 29–32. ISBN 0-9511856-0-8. <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Southworth 1986, pp. 32 - Southworth, P.J.M. (1986). Some Early Robey Steam Engines. P.J.M. Southworth. pp. 29–32. ISBN 0-9511856-0-8. <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Southworth 1986, pp. 33 - Southworth, P.J.M. (1986). Some Early Robey Steam Engines. P.J.M. Southworth. pp. 29–32. ISBN 0-9511856-0-8. <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>GB 2731, J. Richardson, published December 1880 <a href="https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=GB2731" target="_blank">https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=GB2731</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Southworth 1986, pp. 33–34 - Southworth, P.J.M. (1986). Some Early Robey Steam Engines. P.J.M. Southworth. pp. 29–32. ISBN 0-9511856-0-8. <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> </ol>