Coniston Water per hour () in "Blue Bird K4". Between 1956 and 1959 Sir Malcolm's son Donald Campbell set four successive records on the lake in "Bluebird K7", a hydroplane. In 1966 Donald Campbell decided that he needed to exceed 300 miles per hour (483 km/h) in order to retain the record. On 4 January 1967, he achieved a top speed of over 320 miles per hour () in "Bluebird K7" on the return leg of a record-breaking attempt. He then lost control of "Bluebird", which somersaulted and crashed, sinking rapidly. Campbell was killed instantly on impact when decapitated by the K7's
P&H Mining 1,645 tons / 1492 tonnes. P&H Mining Equipment designs and builds four lines of equipment for surface mining operations. They include electric mining shovels, blast hole production drills, walking draglines, and in-pit crushing-conveying systems. P&H Electric Mining Shovels are applied to loading haul trucks and in-pit crusher-conveyor systems in surface mine operations. They range in payload from 21 tons / 19.1 tonnes for the smallest model, the P&H 1900AL, to 120 tons / 108.9 tonnes for the largest model, the P&H 4100XPC. P&H Drilling Rigs are applied to boring grids of tubular explosives containers in hard-rock formations within mine operations.