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The simplest method of retaining the sides of an excavation in soil is to permit the soil to form a natural slope that will be stable even in the presence of water. When there is insufficient space ...
As the lunar exploration mission evolves from exploration to construction and utilization, in situ lunar construction becomes an imperative requirement. The key is regolith solidification and ...
An unusual archaeological aspect of Site 44JC969 was the apparent lack of postoccupational plowing, unlike most relatively level areas throughout the Tidewater region. While the absence of a deep ...