Machines for Grinding Hobs   Save
Youngstown Sheet & Tube Audiovisual Archives
Description: This photograph depicts workers using machines for grinding hobs, which are used for threading couplings. View on Ohio Memory.
Image ID: AC2_YHCIL_MSS0140_B05F81_008
Subjects: Youngstown Sheet and Tube Company; Steel industry; Steel workers; Couplings
Places: Youngstown Sheet & Tube Audiovisual Archives