On the afternoon of 26 July the Evergreen departed Boston on a post- 

 season cruise which included an occupation of the Bonavista triangle and 

 a section across the Labrador Sea from South Wolf Island, Labrador, to 

 Cape Farewell, Greenland. In addition to the regularly assigned personnel, 

 Mr. Saul Friedman from the Lamont Geological Observatory was aboard 

 to conduct a limited collection program of geochemical and biological 

 samples in the area of the Labrador Sea. 



The work of collection of data began in the early morning of 1 August 

 at station 7230, the northern corner of the triangle. As expected, con- 

 siderable difficulty was encountered in lowering the L. G. O. 50-gallon 

 sampler and the 150-pound bottom pinger which were to be used at 

 eight selected stations. After several unsuccessful attempts to launch and 

 retrieve the equipment, it was decided to proceed with the stations of the 

 triangle in a counterclockwise direction and make another attempt with 

 the L. G. O. equipment at station 7259 again located at the northern 

 corner of the triangle. During the intervening stations the ship's personnel 

 devised a successful system of lowering and raising the drum and pinger to 

 the waters edge and casts were made to 602 and 1826 meters at station 

 7259 without further difficulties. 



Lpon completion of the station the Evergreen proceeded to within 5 

 miles of South Wolf Island and commenced the Labrador Sea Section. 

 Stations proceeded without major interruptions until station 7270. 

 While attempting to obtain a drum and small coring samples, the pinger, 

 with corer attached, and drum were being lowered when the pinger gave 

 an uncertain signal of bottom at a meter wheel reading 3047 meters. As 

 the pinger was again signaling free of bottom, lowering was continued to 

 a meter wheel reading of 3081 . The cast was then hauled in to 3030 meters 

 to wait for the thermometers to reach equilibrium and allow for messengers 

 to travel to the deepest gear. Hauling in was difficult and with about 2000 

 meters of wire out the unloading valves stopped the winch. After a wait of 

 10 minutes hoisting was resumed, but about every 100-200 meters the 

 winch would again fail. Finally, with a reading of 833 meters the wire 

 broke at a bad kink just below the surface resulting in the loss of the 

 drum sampler, pinger, corer, three Xansen bottles, and eight reversing 

 thermometers. After that disastrous station the remainder of the survey 

 was completed without major interruption and at station 7283, located 

 5 miles off Cape Farewell, the survey was completed on 9 August 1959. 



In addition to the 54 stations taken on the postseason cruise, four deep 

 and nine surface large volume radiocarbon water samples, six atmospheric 

 and three surface water equilibrated carbon dioxide samples, and six 

 vertical tow and eight surface tow samples were taken for the Lamont 

 Geological Observatory. 



The oceanographic work was under the supervision of ( )ceanographer 

 Floyd M. Soule for the first, second and postseason surveys, and Lt. 

 R. M. Morse for the third and fourth surveys with Lt. P. A. Morrill 

 assisting on all surveys. Other assistants in the observational work were 



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