SB Nation's Steelers blog, Behind The Steel Curtain, has an absolutely epic mock draft for you to check out - here are the first three rounds, and here are rounds four through seven. They've got the Steelers taking Temple DT Muhammad Wilkerson but suggest that the Steelers could pick from a whole range of targets:
↵↵↵So just to recap, the top targets for the Steelers in the first round of the 2011 draft will be (in no particular order) Wisconsin OT Gabe Carimi, Florida OG Mike Pouncey, OSU DE Cameron Heyward, Miami CB Brandon Harris, Colorado CB Jimmy Smith, and Baylor NT Phil Taylor. And of course I'm not counting those players who the Steelers have no chance of getting such as Patrick Peterson, Prince Amukamara, and Cameron Jordan.
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After that, they have the Steelers taking cornerbacks in rounds two and four and an offensive lineman in round three. Interestingly, they have the Steelers taking Pitt running back Dion Lewis in the fifth round, which would be kind of cool:
↵↵↵While at first glance the Steelers appear to be set at RB with Rashard Mendenhall and Isaac "Red zone" Redman they still lack a dependable pass-catching option on third down. Mewelde Moore used to fill that void but he's a 29 year old free agent and didn't look at that good last year. Dion Lewis is compact yet powerful with soft hands and enough strength to be an effective pass-blocker.
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In case you're curious, BTSC has Blaine Gabbert, Marcell Dareus and Cam Newton going with the first three overall picks.