26

into the Iberian Basin, we have undertaken hydrographical
 and radiological investigations there,
Thereby, we confined ourselves, in 1966, to an area
in the region of the Iberia Abyssal Plain (42° N to
43° N and 14° W to 15° W), which was intended for
an initial trial dumping. Our further investigations
in 1968, 1970, and 1974 were concerned with the
Iberian Basin between the Bay of Biscay and the
Azores, and southwards as far as the latitude of
Gibraltar. However, the concentration of the measurements
 continued to be in the region of the Iberia
Abyssal Plain (42°N to 43°N, 14°W to 15°W), where
a single trial dumping had taken place in 1967.

Acknowledgements

We thank the then Federal Minister for Scientific
Research and the Federal Minister for Education and
Science for granting the research funds, without
which a great part of the investigations could not
even have been possible.
Thanks to the efforts of the ship's commands
and crews of the R.V., Meteor" under the leadership
of the respective captains = Feldmann, Fietz, Lemke,
and U, Meyer —- during the cruises nos. 3, 15, 21, 29,
and 33, the investigations were successful; also - at
times - under very heavy sea conditions.
Our thanks apply also to the colleagues who
supported us during the measurements and who undertook
the data processing. For hydrography: Dr. Huber, Messrs.
Hübner, Kempe, Neu, Dr, Neumann, Messrs, Wegner and
Wünschmann, It was not always easy to cope with the