Word: shallowing
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Dates: during 1940-1949
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...Geologist Pratt is specific and scientific. Petroleum was formed (perhaps a billion years ago) from animal and plant remains in the shallow-water marine oozes when their sands and mud solidified into rock. Rocks of this kind comprise 40% of the earth's land surface. Almost all of them should contain oil. With only 15% of the world's potential oil-yielding rock, the U.S. has 54% of the world's proved reserves. The only reason for this, says Geologist Pratt, is U.S. know-how. If & when Asia, Africa, South America acquire the same nose...
...Marines landed. Out of the shallow invasion boats and through the surf thousands of them scrambled to establish beachheads on key points in the Solomon Islands. For the first time the U.S. had seized the offensive on the battlefield...
...Mine hazards are great in the Baltic because it is shallow, can be planted more effectively than deeper water...
These specially designed combination carriers can operate in shallow water, climb over rocks and rapids, slither up & down river banks to take cargo. They are expected to bring the jungles within quick and easy distance of civilization by utilizing South America's unrivaled network of tropical rivers instead of expensive highways and railroads...
Despite its shallow quality, this khaki serial may well explain many perplexing army matters to womenfolk who are worried about their men in the armed forces...