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Show inuateii. ;ef and Brokers, gSMain St. SfjJg'fctWborB New York. Wu oaliboral te9- ; attention. I GREGORY & ROBERTSON Civil Engineers and Contractors SUITE 521-522 MclNTYRE BLDQ. Invootlflatlono, reports, aurvoya, maps and plana for IRRIGATION. lr. HYDRO .ELECTRIC POWER. RESERVOIRS. DAMS, CULVERTS. MASS CONCRETE. LAND SURVEYS. , s " Pipe Lines 2 Inches to 30 Inches 1 1 For Waterworks, Hydro-Power, ' I Iv ' Irrtflation or I f' p r it' Mining Plants I 1 1 sp The most easily and inexpensively H I . I i t"L ' J j installed, the lightest yet strongest ( i I )TmTi construction, the most economical H J i and efficient in power with the Jar- : jj H 1 . - gest capacity, can be had with the H . Special-Steel Lap-Welded Pipe ' ; I : the. Mafheson Patent Lock Joint ;; I The Matheson Joint . 'i ! j' szs. has every distinct ad- : TX s i 1 vantage of the ordinary '. y w ' cast pipe lead joint, with II 1 II . &reaer strength and se- j V , , 1 , ' curity with one-third j ! .j I I J the lead and an immense , : I ' ill sayinS in me and work III II I I !" ' I in installation. Thesim-- III ll I I ! 1 . Jf y J y plicity removes the ne- I III J . cessity for expert work, v : '' 1 admits of fast laying of the pipe under the most difficult conditions and require ments. The National Tube pipe with its smooth interior reduces friction loss to the minimum and prevents tuber culation. Every length (joint and pipe) subjected to 500 lbs. hydraulic test before shipment. Furnished GALVANIZED AND DIPPED (for particularly bad soil) or H DIPPED ONLY. f H Such construction has been in use for 30 years in the Rocky Mountain region hundreds of references to that effect on request. . Photographs of sections used 22 years. Full particulars facts, data and estimates of any ki nd by addressing the h 1 National Tube Company I G-eneral Offices, Frick Building, Pittsburg, Pa. To save time, writ e for information to NATIONAL TUBE COMPANY, NATIONAL TUBE COMPANY, - ! ' H OR . 219 Majestic Bldg., Denver, Colo. 207 Dooly Block, Salt Lake City, Utah. , ! H MM l RIO GRANDE I I Bcenlo Lino or tho World. 3 FAST TRAINS DAILY I Salt Lake to Denver Through Pullman aleopcro to Chicago and points cost. jl Steamship tlckots to all parts of tho world. Tkt. Offlco 301 Main Street. jJ -JkzB |