Building and repairing railways - Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways, (1906) (14761017835)

Identifier: buildingrepairin01kirk (find matches)
Title: Building and repairing railways ... : Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways,
Year: 1906 (1900s)
Authors: Kirkman, Marshall M. (Marshall Monroe), 1842-1921
Subjects: Railroads
Publisher: New York and Chicago : The World railway publishing co.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress



Text Appearing Before Image:
Fig. 49. VIEW SHOWING THE METHOD OF DUMPING AROTARY DUMP CAR. excavated and loaded into the cars by picks andshovels or steam shovels, according to the extentof the cut (see Figs. 51 and 54). Where looserock is encountered the work is conducted inmuch the same manner as earth. Hard pan is acemented gravel, and is found in all stages ofhardness from earth to solid rock; however, thelatter occurs but seldom. It occurs sometimesin mass and again in veins from a few inches toseveral feet thick; as generally found it can bebroken up with a specially designed plow (see
Text Appearing After Image:
110 BUILDING AND HEP AIMING EAILWATS. Fig. 55). If it is extremely hard, it is oftenblasted by explosives, but it does not break up