In 1957, Hawaiian Bitumuls and Paving Company began operations on Guam. Then in 1958, the company formed Hawaiian Rock Products (HRP) and entered into an agreement with the Bamba Family to open a quarry in Fadian, Mangilao. Several years later, HRP was incorporated in the state of Nevada as Dillingham construction, Guam, Ltd., in 1984. In June 28, 1990, a Stock Purchase Agreement was made between Dillingham Construction, Guam Ltd. And MCC Development (Nevada) Ltd. and Mitsubishi Cement Corporation retained the name of the company as Hawaiian Rock Products Corporation. Mitsubishi Cement Corporation is one of the largest manufacturer and marketer of cement and concrete. Today, Hawaiian Rock Products is the largest producer of aggregate based construction materials, ready mixed concrete, concrete masonry blocks and road paving contractor on Guam, Saipan, Tinian, and Palau. Our dedication to consistently producing only the finest quality rock products has brought us to our current leadership role as the largest supplier of asphalt, concrete and aggregates in Micronesia. We are a local company and not just the Guam and Micronesia division of an off-island entity. We value the principle of investing in our workforce. Our growth and success is entirely credited to the superior quality of our products and performance of our people. We have been building the Marianas for over 50 years, and look forward to continuing to meet the growing needs of our commercial and residential industries. We are your number one source and supplier for your building materials needs.