At least some percentage of the chips is of an earthen material such as sand, chalk, and clay much like that found in cat litter. The process used to make these chips is a commerce secret, and varies barely by manufacturer, most being comparatively costly and time-consuming per chip. Then every chip receives a mid-inlay if desired, and is positioned in a particular mildew that compresses the chip, hence the time period compression molded chips. The stress of the compression and the heat that’s added varies from manufacturer to producer. While some casinos which put in the receipt system had stored the $1 tokens round to be used as $1 chips, most other casinos utilizing the receipts had merely scrapped the tokens totally. Most casinos using receipts have automated machines at which clients might redeem receipts, eliminating the need for coin counting windows and lowering labor costs.