Josephus Daniels to Theodore H. Price

The Department is considering the advisability of making an experiment along the above lines and would be pleased to have your ideas covering the following points:

(a) Should the experiment be made on a merchant vessel or would a caisson be satisfactory?

(b) If a caisson is recommended, what is the minimum size of caisson that you consider satisfactory?

Note:- The explosive used should be not less than 330 lbs. and preferably 400 lbs. to agree with the charge currently used in such experiments. The submergence of the charge should be 12 to 15 feet, preferably 15 feet to agree with current practice.

(c) What total thickness of wood pad is recommended and does any special importance attach to the cross sectional dimensions of the individual wood pieces, and the method of applying successive layers by crossing or running diagonally, etc.? If so, please give details.

(d) It is noted that the sides of your caisson were heavily stiffened and that similar good support does not exist on merchant vessels and is not readily obtainable. The above facts have a very vital bearing on the subject and should be considered in any recommendations you may make.

(e) The Department will be glad to consider any other information you may be able to furnish or any recommendation you may wish to make.

Secretary of the Navy

Mr. Theo. H. Price.
This letter was enclosed in a letter from Theodore H. Price to William G. McAdoo dated 27 August 1917.