Chicago : Engineering and Contracting Pub. Co. · leaf 81
clearing the heading wasrushed to enable the drills to be put to workas soon as possible. To this end the clearing-gangs were composed of men who had beenpreviously rested by performing light work only, and only the most skilled and energeticlaborers were employed. The majority i theworker- were… … M. M \ ig. /—Improvised Siding in a Narrow Heading. July ig, 1911. ENGINEERING & CONTRACTING 67 the tunnel-contractors. Other methods oftransportation were tried but proved lesseconnomical than the use of horses in the ad-vance headings. The horses took the cars tothe compressed-air…
Buildings
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