Consider the order of work, after all the wells are drilled.
The pipes are made from roofing material, their diameter is equal to the cross section of the wells, and the length of 0.2 — 0.3 m larger than the depth of the well;
Consider the order of work, after all the wells are drilled.
The pipes are made from roofing material, their diameter is equal to the cross section of the wells, and the length of 0.2 — 0.3 m larger than the depth of the well;
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