saranac lake quarry and concrete. tupper lake concrete materials. aggregate. upstone materials mines, crushes, and sizes aggregates to specification across our region. whether its granite, limestone, or a sand and gravel operation, our experts know how to many types of materials have were used as cemetery markers in early california: wood, field stones, sandstone, marble, granite, slate, zinc, white bronze, sheet metal, and cement. below are some examples of markers created from these materials.