SEVENTIETH CONGRESS . SEss. I. CH. 232. 1928 . AUTOMATIC RIFLES For the development, purchase, manufacture, test, repair, and toa c has e, maintenance of automatic machine rifles, or other automatic or semi- automat ic gun s, inc luding their mount s, sigh ts, an d equi pments , and the machinery necessary for their manufacture, to remain available until June 30, 1930, $344,500 . FIELD ARTILLERY ARMAMENT For development, purchase, manufacture, and test of mountain, field, an d siege c annon, in cluding t heir carr iages, si ghts, imp lements, equipments, and the machinery necessary for their manufacture, $1,152,75 0 . F or pu rchas e, m anufa cture , mai nten ance, and test of a mmuni tion for mountain, field, and siege cannon, including the necessary experi- ments in connection therewith, the machiner y necessary for its manufacture, and the necessary storage facilities, $823,000 . For alter ation and ma intena nce of the m obile a rtille ry, in cludin g the purchase and manufacture of machinery, tools, and materials necessary for the work and the expenses of the mechanics engaged thereon, $561,200 . For purchase, manufacture, and test of subcaliber guns, ammuni- tion, a nd oth er acc essori es for mount ain, fi eld, a nd sie ge art illery practice, including the machinery necessary for their manufacture, $496,58 7 . PROVING GROUNDS, ARMY For current expenses of the ordnance proving grounds, comprising the maintenance of rail and water transportation, repairs, altera- tions, accessories, and service of employees incidental to testing and proving ordnance and ordnance material, hire of assistants for the Ordnance Board, purchase of instruments and articles required for testing and experimental work, building and repairing butts and targets, clearing and grading ranges, $169,000, ROCK ISLAND BRIDGE, ROCK ISLAND, ILLINOIS For operating, repair, and preservation of Rock Island bridges and viaduct, and maintenance and repair of the arsenal street con- necting the bridges, $35,000 . For repairs and alterations, including construction of a draw or lift span in the aid of navigation, of the bridge connecting the city of Moline, Illinois, with Rock Island, Illinois, to be available imme- diately, $50,000 . TES TIN G MACHINES For necessary professional and skilled labor, purchase of materials, tools, and appliances for operating the testing machines, for investi- gative test and tests of material in connection with the manufac- turing work of the Ordnance Department and for instruments and materials for operating the chemical laboratory in connection therewith, and for maintenance of the establishment, $20,000 . A utoma tic r ifles . Field Artillery . Mountain, field, and siege cannon. 343 manufac TANKS
Tanks. Purchase, etc ., of, Fo r the dev elopm ent, purch ase, manu factu re, test, main tenan ce, an d other armored and repair of tanks and other self-propelled armored vehicles, to vehicles . remain available until June 30, 1930, $245,000 . Am munitio n for . Altering, etc., mobile artillery. Ammunition for practice . Proving grounds. Current expenses. Rock Wand, Ill . Operating, et-, bridges . Mol ine -Ro ck Isl and MOLINE- ROCK IS LAND B RIDGE
Bridge . Repairs and altera- tions. Testing machines . Operating expenses .
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