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The Highland Railway Drummond 0-6-4T or X class were large tank engines originally intended for banking duty. They were designed by Peter Drummond . Construction
The Highland Railway O Class locomotives were built as 2-4-0T tank engines, but were soon rebuilt as 4-4-0Ts. They were designed by David Jones for Scottish Railway companies and three were built at the company's Lochgorm Works in 1878 and 1879.
The 18-by-24-inch (457 mm × 610 mm) cylinders, valve gear and motion were common to the two classes, but they had smaller 5-foot-3-inch (1,600 mm) driving wheels and higher pressure 150-pound-force-per-square-inch (1,030 kPa) boilers.
The Highland Railway W Class were four small 0-4-4T locomotives built by the Highland Railway in 1905–1906 to the design of locomotive superintendent Peter Drummond. They were the last engines that were built at the company's Lochgorm works in Inverness , and were used on branch line services.
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Tanks smaller than 7,500 liters (2,000 gallons) are easily manufactured out of cheaper materials, such as HDPE or PVC. Tanks larger than four meters are generally limited by shipping constraints, and the economics suggest a concrete or steel tank fabricated at the tank's location.
When multiple tanks share a bund, the capacity is based on the largest tank. One of the most common designs for large tanks is a concrete or masonry wall around the tank with a concrete floor. [3] Concrete works very well for many liquids, but it is unsuitable for some applications like containing strong acids. Using earth berms for bunding is ...
During the North Vietnamese Army (NVA) Easter Offensive in 1972, tank clashes between NVA T-54/PT-76 and ARVN M48/M41 units became commonplace, but on 23 April 1972, tankers of the 20th Tank Regiment were attacked by an NVA infantry-tank team, which was equipped with the new 9M14M Malyutka (NATO designation: Sagger) wire guided anti-tank missile.