By H. R. HORTON. About 15,000 spectators witnessed the epochal ex plosion at the Blue Diamond stone quarry Sunday after noon, according to careful estimates voiced by several persons on hand who lean toward statistics. Over 2,000 automobiles dotted adjacent knolls, Hill, crests and points of vantage. Some of the throng were parked—as-much-as-a~mile-and-one-half-away—from the scene of operations. The awe-inspiring spectacle’ was one of the greatest pre-arranged ex# plosions during peace times.« ithe world has ‘ever “known. Nearly, 200 tons of straight dynamite toré base of the mountain from its rol mborings of millions of years f is short space of a few seconds.’ two millions of tons of solid was blown skyward, ne The detonation, terrible and ‘int jestic, occurred’ promptly ‘at a. m., three minutes after the fence between the whistles sane blast, ate, agapts! . As the spectatora ‘watehe nite reached . for esee the many tons of ¢ ‘posed a geyser: at minutes as the sic ‘mountain’s . bosom