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Paint protection films use by the military has continued to the present day and 3M now makes a wide variety of aerospace and military films. [3] With time, however, the automobile industry began to take note of the protective benefits of PPF and it was soon being employed by race car drivers despite the difficulty of working with the original films.
In the case of damaged reinforced concrete members, this would first require the repair of the member by removing loose debris and filling in cavities and cracks with mortar or epoxy resin. Once the member is repaired, strengthening can be achieved through wet, hand lay-up of fibre sheets impregnated with epoxy resin, applied to the cleaned and ...
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The concept of brake pads or disc brakes as an alternative to drum brakes had been around at least as early as a patent by F. W. Lanchester in 1902. [2] However, due to high cost and inefficiencies compared to drum brakes they were not commonly implemented until after World War II. [3]
In 1881, Joseph Lowthian Hudson opened a small men's clothing store in Detroit. After 10 years he had 8 stores in the midwest and was the most profitable clothing retailer in the country. In 1893, he began construction of J. L. Hudson Department Store at Gratiot and Farmer streets in Detroit. The store grew over the years and a 25-story tower ...
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Mastiff is a heavily armoured 6×6-wheel drive patrol vehicle which carries eight troops, plus two crew, and is fitted with ECMs and bowman radios. [177] Ridgeback is a 4×4-wheel drive variant of the Mastiff, and provides protected mobility in urban and urban-fringe environments. It comes in three variants: battlefield ambulance, command ...
Causes of environmental contamination include lead-based paint that is deteriorating (e.g. peeling, chipping, chalking, cracking, damp or damage), renovation, repair or painting activities (disturbing or demolishing painted surfaces generate toxic lead dust ), [91] industrial use of lead, such as found in facilities that process lead-acid ...