Biennial Report Volume 14

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 Excerpt: ... decrease in the production of bituminous rock in other states, the output in California has remained practically constant at from 25,000 to 40,000 tons a year. This State is the largest producer of any of the productive states in the Union. The other states that have produced bituminous rock are Utah, Kentucky, Arkansas, Texas, Georgia, also Indian Territory. The decrease in the production of bituminous rock has followed an increased production of liquid asphalt. But in some sections the preference is for bituminous rock, and thus in California the production has not decreased as it has in other states. The liquid asphalt, especially in California and Texas, is very largely used and is adapted to road dressing, and coating for wood and iron substances, and in the manufacture of building papers. In the refined state it is practically pure asphalt. The failure to more largely increase the production of liquid asphalt in California is due in a measure to the fact that the haulage to the Eastern markets is too expensive to be profitable. The Eastern States are supplied with natural asphalt for street paving from Trinidad and Venezuela; these asphalts also are refined and utilized for roofing and other metal paints. In evidence of the lead that California has in the production of bituminous rock, liquid asphalt, and other like products of petroleum, this State in the year 1906 produced 91,957 short tons; Texas, 24,993; Utah, 12,947; Kentucky, 4,172; Indian Territory, 2,690; Arkansas, 900; and Georgia 400. Figures showing the aggregate mileage of roadways and street paving constructed with bituminous rock and liquid asphalt are not available; but every city or large town of importance in this State has reaped the benefit of this character of paving material. The...