Deep sea photographs in the GH77-1 cruise were obtained by two methods, namely a one-shot 16 mm camera attached to the freefall (boomerang) type photo grab and an independent 35 mm deep sea camera.

From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.

Supplement to: Kinoshita, Yasumasa; Moritani, Tomoyuki; Handa, Keiji (1979): Manganese nodule occurrence and benthonic activities observed from deep sea photographs, in: Deep Sea Mineral Resources Investigation in the Central-Western Part of Central Pacific Basin, January-March 1977 (GH77-1 Cruise). Geological Survey of Japan, Cruise Report, 106-130