Rail support stiffness directly correlates with short-pitch corrugation. Rail grinding operations occur periodically in order to prevent rail corrugation from occurring. Preventive rail grinding is done before any signs of rail corrugation development. Today the corrugation process is carried out using the process of roll forming. Corrugation likely developed as ancient potters attempted to mimic the visual properties of coiled basketry. This slippage also causes noise and surface damage called "corrugation". This base had a coaxial corrugation and drain holes. This version of the instrument would require brass embouchure technique rather than corrugation. The absence of calcium in blood causes muscle corrugation, which results in kinks. Rail corrugation is frequently the subject of community noise complaints. Many materials today undergo the corrugation process. Railroad tracks that experience continual use are more likely to experience corrugation and overall wear. He starred in the musicals "Bran Nue Dae" and "Corrugation Road".