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'Marston Mat' Pierced Steel Plank (PSP). 225mm(W) x 225mm(H) 9inches(W) x 9inches(H)
'Marston Mat', was a very common covering used for makeshift runways, parking areas and other military uses where rough ground was prevalent. Each panel measured 1 ft 7.5 in by 11 ft 9.75 in, and interlocked with its neighbour by a series of flat 'T' hooks and slots along each of the longest sides, which allowed a degree of flexibility of movement. PSP was used by Allied armies and air forces on all fronts during World War Two and continued in use through the Korean War and well into the Vietnam War. During the latter conflict however, PSP was found to be unsuitable to that environment due to vegetation growing through the lightening holes which could be ingested into aircraft intakes. PSP was gradually replaced with the improved M8A1 type which omitted the lightening holes. Millions of PSP strips were produced and it is still commonly found around the world to this day in both civilian and limited military use around the world.
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