GIFFORD-HILL

CONSULTING SERVICES IN CONNECTION WITH THE USE OF READY-MIXED CONCRETE, CHEMICAL ADMIXTURES USED IN ALTERING PROPERTIES OF CONCRETE, NON-SHRINK GROUTS AND RELATED CONCRETE CONSTRUCTION CHEMICALS, CUSTOM PRODUCTION AND SUPPLY OF PORTLAND CEMENT FOR USE IN CONCRETE, CUSTOM PRODUCTION AND SUPPLY OF AGGREGATE, SAND, CRUSHED STONE, CRUSHED SLAG, BITUMINOUS AGGREGATE, RAILROAD BALLAST, FILTER SAND, BLASTING SAND, METALLURGICAL SAND, ROOFING GRAVEL, FABRICATING AND SUPPLYING PRESTRESSED AND PRE-CAST PRESSURE PIPE, CONCRETE RAILROAD TIES, CONCRETE BLOCK CONCRETE SPECIALTY PRODUCTS AND INSTALLATION AND REPAIR OF AGRICULTURAL IRRIGATION SYSTEMS