Rofomex is moving Mexico toward phosphate self-sufficiency with dredge mining operations. This is a case study of dredge mining. Ellicott Dredges is the only dredge builder that designs all key components of the dredging system – from winches to pumps, from excavators to spud carriages.
Productivity improving technologies date back to antiquity, with rather slow progress until the late Middle Ages. Important examples of early to medieval European technology include the water wheel, the horse collar, the spinning wheel, the three-field system (after 1500 the four-field system—see Crop rotation) and the blast furnace.
AIR TOOL LUBRICANTS. The lubrication of pneumatic rock drills in both underground and surface mining is very important. These lubricants operate in an environment of dust, dirt and moisture and as such need to provide outstanding anti-wear, rust and corrosion protection.
A Space Colony is when a colony is not on the surface of a planet, but instead is a huge space station. They are discussed in detail here.. And when a mature colony starts making noices about "No Taxation Without Representation", the time is ripe for a War of Independence.
Technical Questions and Answers Archive. The ASA Technical Questions & Answers is a free service offered to all users, but primarily intended for engineers, architects, owners and anyone else who may be specifying the shotcrete process and/or has need for a possible answer to a technical question.