agree with those entered on the M-Sheet, as this 

 is the only means of identifying the samples 

 when they arrive at the laboratory. A feature 

 of the lalael is that when it is properly attached 

 the top of the core liner is indicated by the word 

 "top" and two flanking arrows. Labels should 

 be taped to sample containers, and in those 

 cases where the core liner is waxed, the coat of 

 wax should be applied over the label. Because 

 the waxing process often obscures the writing 

 on the label, it is good practice to duplicate the 

 label before waxing and to tape the duplicate 

 label over the waxed surface. 



L-41 Packing, Storing, and Shipping Bot- 

 tom Sediment Samples. — All cores should be 

 stored aboard ship in an upright position to pre- 

 vent disturbance to the structure of the sedi- 

 ment. Cores to be analyzed for engineering prop- 

 erties, however, should be handled with extra 



care, and the engineering properties analysis 

 should be performed at the first available shore 

 facility. Wlien sediment samples are taken off 

 the ship and will require packing for shipment 

 to a laboratory, special shipping cases should 

 be used for the cores, and the sample jars should 

 be packed carefully to reduce the possibility of 

 breakage during shipment. The cases for the 

 cores should be provided with a screw-fastened 

 top and should be plainly marked HANDLE 

 WITH CARE and THIS SIDE UP. 



Cases of cores and bottom samples to be 

 shipped to the Oceanographic Office should be 

 addressed as follows : 



To: Commander 



U.S. Naval Oceanographic Office 

 Attention : Geological Laboratory 

 Washington, D.C. 20390 



L-22 



