1. Steam Engine — 2023-10-08 00:19:36

   …r vacuum, principle. The first industrial applications of the vacuum engines were in the pumping of water from deep mineshafts. In mineshaft pumps the reciprocating beam was connected to an operating rod that descended the shaft to a pump chamber…

2. Underwater Tunnel — 2020-10-11 23:44:16

   …a major leap in tunnelling technology. This protected workers and improved safety of the tunnel collapsing. == Tunnel shafts == Work began in 1825 with the the building of the shafts down to the tunnel. This in it itself was a marvel of engine…
   …mesTunnelOpen.jpg" class="right" title="The 'Eighth wonder of the world' the Thames Tunnel Opens" width="" }} When both shafts were in position miners were hired from coal mines and the tunnel excavation began. During the building work in 1826…

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