ations from 2006-10 in the time when the organization moved from the Milwaukee area to Arlington, Texas. Ridenour was part of the team that worked on USBC’s ball motion study that, ironically, studied pretty much everything but hardness, which at the time had become a non-issue and would remain that way until the PURPLE HAMMER and PITCH BLACK made it an explosive issue again in bowling in... subscribe to read more. Paul Ridenour, who was a close associate of the late Mo Pinel, worked for USBC in Equipment Specifications from 2006-10 in the time when the organization moved from the Milwaukee area to Arlington, Texas. Ridenour was part of the team that worked on USBC’s ball motion study that, ironically, studied pretty much everything but hardness, which at the time had become a non-issue and would remain that way until the PURPLE HAMMER and PITCH BLACK made it an explosive issue again in bowling in... Social Media: