Welcome to the DiGeronimo Aggregates newly redesigned Web site, a tool that we hope you will use in determining what lightweight aggregates best suit your needs. Providing engineers, contractors, private and public organizations with a variety of solutions using lightweight expanded shale aggregates and recycled concrete. DiGeronimo Aggregates is a national industry leader in the production of sustainable Haydite. We hope that you use this site as your resource to learn more about our products and see how environmentally friendly they are.