ALVIN 644 A Puerto Rico 1976 dive 644 no sound reel 10The runtime for this video is 20m 44s.Alvin dive 644 took place on April 10, 1976 during voyage LU-83. The Chief Scientist was B. Heezen in the operating area of Off Navidad Bank. The purposewas described as 'GEOLOGY' and the sponsor as 'UNOLS'.The items in this collection are embargoed in the system in keeping with copyright requirements. However, they are available to users upon request. Please contact the MBLWHOI Library to access the items at whoas@whoi.edu.Digitization of this material was supported by a Recordings at Risk grant from the Council on Library and Information Resources (CLIR). The grant program is made possible by funding from The Andrew W. Mellon Foundation. CLIR is an independent, nonprofit organization that forges strategies to enhance research, teaching, and learning environments in collaboration with libraries, cultural institutions, and communities of higher learning. To learn more, visit www.clir.org and follow CLIR on Facebook and Twitter.