Marston Matt
You may find Pierced Steel Planking (PSP) making up some of our trails here at TRW, also known as Marston Matt.
These planks were used to effectively ‘pave’ a large area over difficult to build terrain usually making up airfields in Alaska during WWII. They weight about 66 lbs and are 10’ long and 15” wide and interlock in a staggered pattern, small enough to be easily deployed manually by soldiers, and mobile enough to build a full military runway over natural and even wet terrain such as found in the Aleutians and Southwest Alaska where the Japanese made there first invasion of US territory in WWII.
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