The Pittsburgh Steelers locked up another piece of their future, annoucing the signing of tight -end Heath Miller. Pittsburgh Steelers tight end Heath Miller has agreed to a six-year contract that runs through the 2014 season. Miller, one of the top blockers among NFL tight ends, had one season remaining on the five-year contract he signed after being Pittsburgh's first-round draft pick in 2005. Miller, 26, has played on two Super Bowl-winning teams in his first four NFL seasons. He ca...