SBM requested that each cement supplier should provide:
- Cement, specified by Type, meeting the requirements of ASTM C 150, C 595 and C 1157;
- Mill Tests Reports, with each shipment of cement or bill of lading, that certify conformance to ASTM or AASHTO specifications;
- A monthly ASTM C-917 (Cement Strength Uniformity) report by the 15th of the month following the 28-day cube breaks. This report may only be available for a predominant product from a cement source (not available for all product) but provides an indication of the uniformity of product from the source;
- An original notarized letter of the Manufacturer’s Certification annually or more often for each product purchased.