The bottom sediments were less aggressive than sea water environ- 

 ments and the lower oxygen content sea water was less aggressive than 

 the higher oxygen content sea water. 



Each transmittal of this document outside the agencies of 

 the U. S. Government must have prior approval of the U, S, 

 Naval Civil Engineering Laboratory, 



MBL/WHOI 



D 0301 OOMOlbS h 



