. Deep-ocean biodeterioration of materials. Materials; Marine sediments. pinger/attitude sensor 12.35 kc, 50 msec/10 sec ^'n^mimjm concrete sinker- Figure 2. Schematic of STL) ll-l on the ocean floor in 2,340 feet of water.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Muraoka, James S; Naval Civil Engineering Laboratory (Port Hueneme, Calif. ). Port Hueneme, Calif. : U. S. Naval Civil Engineering Laboratory

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