Giant Diving Bell for River Dredging --This tremendous diving bell newly constructed and for underseas dredging is the most improved type ver and harbor improvement work.Its safety appliance capacity make it a valuable asset in the move- extending and increasing the availability of and ports.

Digital Commonwealth — Boston Public Library

Giant Diving Bell for River Dredging --This tremendous diving bell newly constructed and for underseas dredging is the most improved type ver and harbor improvement work.Its safety appliance capacity make it a valuable asset in the move- extending and increasing the availability of and ports.

International Film Service · [ca. 1918]

RightsCC0 — Public Domain

CollectionDigital Commonwealth — Boston Public Library

[Information from item housing] Diving: Devices

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