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By J. H. Wiggins

The evaporation of crude oil without doubt causes one of the largest single losses to which the oil is subjected after it is taken from the ground. The few days during which crude oil is stored on the lease before being taken by the pipe line, causes an aggregate loss per year from evaporation estimated at 122,100,000 gallons of gasoline in the Mid-Continent field alone. This has a value, at 22 cents per gallon, of $26,880,000 and represents about 3 per cent of the total gasoline produced in the United States from all fields and all sources. The following table shows this in more detail:

May 1, 1920

By E. L. Garton

The United States Bureau of Mines has recently collected samples of crude petroleum from wells in the newly developed Joiner. Kilgore, and Longview fields of Rusk and Gregg Counties in the East Texas district, and from the Van field of the East Central district of Texas.

Jan 1, 1931

By W. H. Young

THE BITUMINOUS coal and lignite industry declined slightly in 1961, compared with the 1960 figures. All of the major items, production, consumption, average value, exports, and employment, declined. Even the steady upward trend in mechanization failed to materialize; the percentages of total tonnages mechanically loaded and cleaned remained the same as in the preceding year. However, tonnage per man per day increased from 12.83 tons in 1960 to 13.87 tons in 1961, owing partly to the increased tonnage produced by continuous mining machines. Also, the percentage of total production mined by stripping and by augers increased slightly. Production.-The output of bituminous coal and lignite in the United States in 1961-403 million tons-was 3 percent less than the 416 million tons produced in 1960. Production was retarded in 1961, owing largely to the business recession and reduced exports.

Jan 1, 1962

By E. L. Garton

The United Status Bureau of Mines has recently collected samples of crude petroleum from well] in the newly developed Joiner, Kilgore, and Longview fields of Rusk and Gregg Counties in the East Texas district, and from the Van field of the East Central district of Texas. East Texas Cruder The four samples of crude oil from the East Texas fields are all typical "intermediate base" crudes according to the classification given by Smith and Lane. 3 Sample 31,063 is from the discovery well in the Joiner field. This well came in on October 3, 1930, with an initial production of 400 barrels per day. Sample 31,062 was obtained from a well that was completed on February 1, 1931, with an initial production of 3,500 barrels per day. The 32 East Texas crudes are produced at an average depth of approximately 3,600 feet. which is the deepest Woodgine-sand production so far encountered in any of the Texas or Louisiana fields.

Jan 1, 1931