This category contains sites of companies involved in or primarily focused on the variety of ferrous and nonferrous casting processes. The emphasis is on manufacturing or custom supplying both rough cast and machined end products. Most particularly, this "lead-in" category indexes firms engaged in more than one process or, in a few cases, in casting of a relatively rare nature (e.g. continuous strip and bar casting) or type of end product (e.g. band instrument parts). Otherwise, where a site reflects a concentration on one process (e.g. sand casting) more than others -- or even just that one -- it is more logically allocated to its appropriately named subcategory. Note: The Supplies subcategory is used to gather together the sites of companies that serve the foundry industry with chemicals, consumables, molds, patterns, components, and similar requirements.