Chicago : Engineering and Contracting Pub. Co. · leaf 137
August 2, 1911. ENGINEERING & CONTRACTING ample, when the mixture used for filling the•depressions, whether it be sand, gravel orrock and oil mixed, is too soft and carelesslydumped into a hole or rut, and not tampedsolid, the wheels will push it out on eitherside, and we not only have the…
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