You need to excavate and remove the topsoil, line the subsoil with a geotextile, then lay and compact hardcore. Follow this with a layer of compacted "hoggin" – compacted clay, gravel and sand. This is then sprayed with hot bitumen, and has a layer of pea shingle rolled into it.
It is as if the whole of human history has been compacted into a single lifetime.
Parts are covered by up to 3000 metres of compacted ice and snow, and the continent holds nine-tenths of the world's fresh water.
Another unique feature of Four Mile is that the sand is so tightly compacted that you can push a pram or ride a bike easily.
Built on a richly compacted corporate soil.
It's used to test the compaction of recently compacted roads.
Coming off a compacted three-Test series against Pakistan, which was pushed back to accommodate the Twenty-20 world championship.
