Ten area companies have joined forces to double to $50,000 a reward for credible information leading to the safe return of, or communication with, University of Notre Dame first-year student Chad S. Sharon by University officials. Notre Dame announced the offer of a $25,000 reward on Jan. 3.Sharon, 18, from Pelican Lake, Wis., last was seen by friends at an off-campus party on Corby Street in South Bend around 2 a.m. Dec. 12. They say he insisted on walking back to his campus residence, Fisher Hall.p. “On behalf of the University and Chad’s family, I want to offer our deep appreciation to the corporate leaders who have joined in offering this financial support,” said Rev. Mark L. Poorman, C.S.C., vice president for Student Affairs. “We remain committed to using every means possible to find Chad, and we once again thank all who have assisted in this effort and ask for their continued help.”p.