Ntupu na-eme ka Mesh na-eme ka ọ dịkwuo elu bụ ụdị ọhụrụ arụ ọrụ dị elu na nke na-azọpụta ike, bụ nke a na-ejikarị na ọdụ ụgbọ elu, okporo ụzọ, tunnels, multi-storey and high- riser Buildings, water conservancy dam foundations, ọdọ mmiri ịsa mmiri, ...
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