A buoyancy prime mover that converts the potential energy of a gas buoyant within a liquid into rotating mechanical energy comprises a plurality of rigid or collapsible buckets joined by one or more chains with rotatable sprockets and shafts to form a continuous loop so that when the buoyant gas is trapped within the buckets, the buckets rise through the liquid and rotate the chain and sprockets to generate power.
Nose tackle Casey Hampton and inside linebacker Kendrell Bell were regular starters in 2001 for the Steelers, but not since 1987, when safety Thomas Everett and cornerbacks Delton Hall and Rod Woodson were in their regular rotation, has Pittsburgh gone with three defensive rookies in the lineu
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