Sec.C, part of shield Sec.C, EBT getting ready to lower shield Sec.C, EBT getting ready to lower shield Part of shield ready for lowering sec.C, EBT Part of shield ready for lowering sec.C, EBT Part of shield ready for lowering sec.C, EBT Getting ready to lower part of shield Shield for sec.C, EBT Part of shield ready for lowering sec.C, EBT Part of shield ready for lowering Jaynes & Co.'s Store, Hanover and Washington Sts., Boston, Mass., July 11, 1902 Northeast corner Hanover and Washington Sts., Boston, Mass., July 11, 1902 Showing location of Test sect. EBT State St. near Merchant's Row Test sect. EBT State St. at Exchange Building Test sect. EBT State St. at Exchange Building Concrete beam test made at Canal St. yard Testing concrete beams Testing concrete beams Testing concrete beams, beam with twisted rods in bottom Showing concrete beam when broken Showing break in concrete beam tested July12, 1902 Broken concrete beam Test of concrete beam with twisted rods in top and bottom Test of concrete beam with twisted rods Test section in front of Exchange Building Settlement of street (State St.) near Atlantic Ave., south side of engine house Test sec.D, EBT in front of Fisk Building Pipes etc. in front of no.78 State St. Machine cor. State and Broad Sts. Board of Trade Building View on State St. Exchange Building, sidewalk looking toward Merchants Row Outside of sidewall sec.D, EBT Ducts on South Side of sec.D at Exchange Building looking easterly Method of laying ducts on sec.D, EBT taken in front of Exchange Bldg Brooken Concrete Beam goes with 1615 Same as 1631 concrete Beam test with round steel rods parallel Looking up State St. from sec.C, EBT State St. looking easterly from derrick platform sec.C. EBT Looking up State St. from sec.C EBT Air compressors sec.C EBT Showing concrete sewer sec.D, EBT at Board of Trade Building Machine, sec.E, E.B.T.at Brazer Building, State Street, Boston, Mass., September 4, 1902 Machine on north side state between Exchange St. and Devonshire St. Looking up State St. from shaft on sec.C, EBT Machine between Exchange St. and Devonshire St. on State St. View of low pressure compressors, sec.C Air compressors, sec.C Rear of shield for sec.C, EBT in shaft Showing shield in shaft for sec.C, EBT Northerly and easterly walls Atlantic Ave. chambers Showing crack in northerly wall of Atlantic Ave. chambers
