MINING CONGRESS
Cleveland, O.— (A. P.)—The American Mining Congress, representing mining interests of the country, will observe its 25th anniversary "fit its annual convention here October 9 to 14. It will also celebrate a growth of mineral production in the United States indicated by a value of $6,707,000,000 in 1920, compared with a value of $646,992,582 in 1897, according to figures of the congress. Canada, Mexico, and several South American countries have been invited to participate in an elaborate exposition of mines and mining equipment to be held here. The convention was recently completed here at an approximate cost of $6,000,000.
Delegates from all the important mining states are expected to attend. Thirty-nine states and territories were represented at the convention in Chicago last October. Officials of the congress expressed a hope that 1922, like 1897, will bring a revival of the mining industry. In support of that hope, they asserted that demand for production of all kinds is increasing and that a number of the large western copper mines have resumed operation.
In detailing the development of the mining industry since the formation of the congress, officials of the organization cited an increase in the output of coal mined in America from 178,776,070 tons in 1897 to 269,558,000 tons in 1920. Copper figures given by the San Francisco-A.P.A. were 220,671 tons for 1897 and 539,759 for 1920.
San Francisco-A.P.-A verdict of acquittal was returned by a jury Wednesday in the  Third trial of Roscoe C. Arbuckle on a manslaughter charge growing out of the death of Miss Virginia Rappe, motion picture actress. 