Sand Gravel
SAND GRAVEL PLANT. In 1997, Purdy Materials started mining sand and gravel to supply its own concrete operation with quality aggregates. We began selling to the public in 1998. Our current plant is loed on farmland in Tippecanoe County near the city of Lafayette, Indiana. We excavate aggregates from glacial and alluvial deposits and process them via a series of crushing, screening and ...