Ocean Science & Engineering, Inc, herein proposes to supervise the sampling of the beaches along the coast of South West Africa in the C.D.M. lands opposite the Collins Offshore Concession. The object is to determine the quantity of the diamonds between the low water line and the high water line. The resulting report will be an appraisal of the value of the beaches as future mining property.
We have already examined the beaches superficially by flying over them and walking on them. From the charts of the coast and the aerial photos we have determined that only about one half of the total length of 150 miles is susceptible to sampling as we propose; the remainder is abrupt cliffs, very irregular rocks or is unsuitable for some other reasons. We do not (know) how to sample systematically in the rocky areas at this time.
In the sandy areas we tentatively suggest taking a line of samples every kilometer except in the pocket beach areas where at least two lines of samples, appropriately placed, will be required. Each line of samples will consist of an average of four holes about four feet in diameter. These will be put down to bedrock, the rock washed clean and the gravel below the present sands processed for diamonds on the beach.
We also have looked into the situation with respect to the use of men and machinery along these remote beaches. We believe that the work can be most efficiently done by making use of the facilities of C.D.M. That is, additional machinery should be purchased by C.D.M., and additional men employed for this specific job. They are experienced in the mechanics of desert diamond operations, security problems and finding proper labour.
We propose to furnish one engineer-geologist full time who will design a sampling system, supervise its construction and operation, and work with it until it obtains satisfactory samples in the various kinds of conditions encountered.. We will remain with the programme until the end of December, 1964.
We estimate the cost of the entire programme at R 250,000 based on cost figures obtained from C.D.M., Anglo and from South African machinery suppliers and manufacturers. Of this total, OSE's part is estimated at R 36,000 to cover the salary, travelling expenses, overhead and fixed fee (the latter based on OSE's estimated costs only).
All the remainder of the expenditure will be handled through the C.D.M. accounting department as direct charges against the exploration.
The following pages amplify these ideas and explain what would be done.