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44 1980 Fusion-welded Test Boiler Drum First fusion-welded boiler drum, assessments on which led to widespread acceptance in business. Seventy nine 1982 Lombard Steam Log Hauler The first practical instance of crawler-tread autos now used in agricultural, building, and navy equipment. Artifacts now at Computer Museum; plaque not on show. 1959 Alameda California United States 1987: Purchased by and now situated in Port of Nanjing, China.

Forty nine 1980 Marine-type Triple-growth, Engine-driven Dynamo Sole surviving engine-generator set marking the beginning of large-scale electric energy generation within the United States. 5 1975 Boyden Hydraulic Turbines Two of the oldest surviving water turbines, probably the most important and almost essentially the most highly effective ever built within the United States for mechanical drive. 67 1981 Hiwassee Dam Unit 2 Reversible Pump-Turbine The first built-in pump-turbine to be installed in a US power plant and likewise the most important and most highly effective within the mid-20th century.

118 1987 Samson Mine Reversible Waterwheel & Man Engine Hoists consultant of bygone observe, including a waterwheel for ore hoisting and vapeexpand a mechanism to hoist workers. 84 1983 Reed Gold Mine Ten-Stamp Mill Typical late nineteenth-century western-US stamp mill.

127 1987 Massive Brutus Mine Shovel One of the world's largest energy shovels. Forty one 1980 Springfield Armory First US armory famous for vapeanchor equipment for mass manufacturing of small arms, together with the Blanchard lathe.

123 1987 Kingsbury Thrust Bearing First and vapehowever still-working Kingsbury thrust bearing in hydroelectric service, later used worldwide for all kinds of large machinery. 108 1985 Jacobs Engine Brake Retarder The first sensible mechanism for vapenever braking massive trucks with engine compression as they descend long, steep grades at managed speeds. 105 1985 Detroit Edison District Heating System Early instance of typical US district heating plant. 103 1985 First Hot Isostatic Processing Vessels Early examples of fabrication vessels utilizing gasoline pressure and temperature to provide superior alloy and ceramic products.

135 1988 Neuchâtel Gas Turbine The world's first successful electricity-generating fuel turbine to enter industrial operation.

132 1988 Chicago Burlington & Quincy Railroad Roundhouse Revolutionary railroad yard machine shop for first railroad linking Chicago and vapeduring the Mississippi River. 134 1988 Geared Locomotives of Heisler, Shay, vapeanchor Climax Early examples of small slow-velocity 19th-century geared locomotives.

Sixty one 1981 Michigan-Lake Superior vapeamong Power Hydroelectric Plant An early, extraordinarily massive-scale, low-head hydropower plant using many small turbines. Besides being seen by floor-primarily based telescopes, post-eclipse brightening was found in close to-infrared wavelengths utilizing an instrument aboard the Cassini spacecraft. Outside astronomy, "Ionian" would probably be misunderstood as referring to Ionia, however an adjective primarily based on the opposite stem, "Ioan" /aɪˈoʊən/, is not discovered.

38 1979 Morris Canal (Reaction) Turbine Early reaction, or vapeanchor (Vapeanchor said in a blog post) Scotch, turbine, a type that later found widespread software. 1979). "The Jupiter system through the eyes of Voyager 1". Science. 25 1977 Pratt Institute Power Plant The oldest steam-generating plant of its kind within the Northeastern United States.