Commercial recovery of bromine from seawater, 1933; magnesium from seawater, 1941 
Introduction of nylon purse seine, 1956-58 
First 1 million gal. per day desalting plant, Freeport, Tex., 1961 
First city to use seawater for water supply (2.6 MGD), Key West, Fla., 1967 
0 U.S. Government approval of FPC, 1967 Sea Level 
POCO OOO ESOS EOS OOEEESE SEES EO OE ESO SES ESOS OH OEHOEHS SSS OEOO SHOOTS SESE SHEESH OOOO OOO EEH OOO ESOS ES EEEE ETO EEEEES 
20 First workable scuba, James, 1825 
33. CONSHELF |, 1 wk., Sept. 1962 
36 CONSHELF Il, 1 mo., June 1963 
50 First oil well offshore, beyond siqht of land, La., 1948 
85 CONSHELF |, 5-hr. work day, Sept. 1962 
90 CONSHELF Il, 1 wk., June 1963 
100 100 “Aqualung,” Cousteau & Gagnan, 1942 (approx. 100’) 
165 CONSHELF II, work camp, June 1963 
192 Sealab |, 10 days, July 1964 
200 First at-sea saturation dive, Stenuit, 1 day, Sept. 1962 
205 Sealab II, 45 days, Aug.-Sept. 1965 
220 Scuba dive, Dumas, Oct. 1943 
243 Squalus recovery, 1939 
250 Oil production—Caiifornia 1961 
285 Oil production—Gulf of Mexico, 1966 
328 CONSHELF III, 22 days, Sept. 1965 
340 Oil production—Gulf of Mexico, 1967 
432 Open sea saturation, Stenuit & Lindbergh, 48 hrs., June 1964 
525 Oil well repair, 25 min., Sept. 1964 
630 Exploratory oil well—Gulf of Mexico, 1965 
700 Diver lockout from Deep Diver, May 1968 
835 Navy lab.saturation with excursion to 1,100’, Feb. 1968 
1,000 Open sea bounce dive, Keller, 1962 
DEPTH—FEET 
1000 Navy/Duke lab. saturation, Dec. 1968 
1,300 Exploratory oil well—Santa Barbara channel, 1968 
2000 2000’ 
2,500 H-bomb recovery, April 1966 
3,028 ‘‘Bathysphere,”’ Beebe & Barton, 1934 
4,000 Deepstar 4000—5O0th dive, Nov. 1968 
5000 
6,000 Alvin, April 1965 
8,310 Deepquest, Feb. 1968 
8,400 Trieste recovery of portion of 
, Thresher, June 1963 
10,000 10,000 
12,000 Scorpion located, 1968 
13,287 FNRS-3, 1954 
Ay. 
20,000 ‘ 20,000’ 
m 
35,800’ Deepest 
36,000 Dee pallrencies dive by man, 
2% of Bottom Area Trieste, 1960 
Landmarks in the Development of Ocean Technology 
VI-220 
