Tedious work

Caption: "Tedious work--The big job going on in the tunnel is lining it with miles of these little tiles. There will be about 8,100,000 separate pieces in all. Shown doing the work on one section are Tony Lyons, 703 2d Ave., Manhattan; Dominic Romeo, 54 1st Place, and Jacob Rado, 4810 28th Ave., Astoria."