National Tube Company organization
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Claims (2)
Frank J. Hearne headed
National Tube Company documented
document
“An experienced manager, Frank J. Hearne, retired president of National Tube Company...…”
source: url — Colorado Fuel and Iron · p.1
National Tube Company merged_with
U.S. Steel documented
document
“...National Tube Company, one of the predecessors of U.S. Steel...…”
source: url — Colorado Fuel and Iron · p.1