APPENDIX B B. IMPROVEMENT OF HARBOR AT DULUTH, MINNESOTA, AND OF THE ENTRANCE TO SUPURIOR BAY, LAKE SUPERIOR-IMPROVEMENT OF THE HARBOR AT GRAND MARAIS, MINNESOTA. REPORT OF CAPTAIN CHARLES J. ALLEN, CORPS OF ENGINEERS, BVT. MAJOR, U. S. A., OFFICER IN CHARGE, FOR THE FISCAL YEAR ENDING JUNE 30, 1880, WITH OTHER DOCUMENTS RELATING TO THE WORKS. (For letter of transmittal, see Appendix U.) BB I. IMPROVEMENT OF HARBOR AT DULUTH, MINNESOTA, The work at Duluth consisted in dredging in the inner harbor and in some repairs to piers bordering the canal, the latter done by day labor and purchase of materials in open market, the former by contract. The dredging contract made August 21, 1878, having been re-extended to embrace the 25th of August, 1879, there were removed 23,197 cubic yards of material from the inner harbor between June 30, 1879, and that date, August 25, 1879. Congress having, by act approved March 3, 1879, appropriated $25,000 for carrying on the improvement, advertisements were duly inserted inviting proposals for dredging in the inner harbor. The bids were opened on the 21st of August, and a contract entered into on the same day with Williams and Upham, they being the lowest bidders. Dredging under this contract commenced on the 26th of August and was continued until the 22d of November, when the approach of winter forced the dredges off. The contract was extended to embrace the 25th of June, 1880. Work was renewed the 28th of April following and continued until the expiration of the extension. One hundred and thirtyseven thousand one hundred and ten cubic yards in all were removed by dredging during the fiscal year. A complete survey of the harbor was made during the season, as part of the survey of Superior Bay ordered by section 2 of the river and harbor act approved March 3, 1879, to determine the best plan for harbor at the head of Lake Superior. The report, based upon this survey, is printed as Senate Ex. Doc. No. 153 Forty-sixth Congress, second session. The harbor has generally, wherever dredging has been carried on, good depth of water, although many points require retouching, owing to the movable and shifting character of the bottom. |