4.Higher still the snow was ready to avalanche.
5.STABILITY EVALUATION ON A FALLING ACCUMULATION IN A ROAD IN SICHUAN
7.The old wall is crumbling away at the edges.
8.To cause to collapse inward violently.
9.The Petroliferous Features of Collapse Sediment Zone of Niochem Group in West Siberia
10.The dam break and an impetuous torrent of water sweep away the town.