Briquettes are dense blocks created by compressing certain materials. For instance, charcoal and water softener salt are prepared as briquettes using charcoal dust and sodium chloride, respectively. These blocks can be compressed in cantilevered removable cutting rolls like those machined by K.R. Komarek, a Wood Dale, Illinois, company whose founder, Gustav Komarek, patented briquetting processes in the early 1900s to make coal less dusty and easier to transport.