Show Heavy Blast Shatters otters Point An Interesting demonstration in Ur blasting was 35 given the public Friday I Friday morning at 11 1100 00 a a. a m. m March larch 1 20 26 G in inI inthe inthe inthe i I the mouth of Manti ManU Canyon rhe fhe The i i point tit u t the power house housa was widened by the Mayfield I I I Camp for the purpose ose of Ito Road Hoad ad construction conI con- con I under supervision of Supt I J J. J C. C Munk 1 I I Explosive Engineer Carl Bergdahl Bergdahl of Pr Region 4 was called in and su- su t su-t ed operations ns General h Fore j ore ore-i i t man George Allred was as in charge of the drilling work The particular ular danger of flying Hying debris falling down upon the power house was studied The plan was worked out with drilling drill drill- drilling ing 36 holes ten feet apart to an average depth of 20 feet Into these hole holer for the purpose of springing 1 I was placed a charge of from 2 to 23 sticks before the main shot This I charge worked a larger pocket atthe at atthe at atthe the bottom of the holes allowing more powder to be used in raising raisins the hea heavy y blast t. t 6 cases eases of dynamite dynamite dyna dyna- mite were used for springing the holes I Approximately people were on I hand to witness ss the blasting of this point These TheBe people were confined to a flat fiat pa pasture turc to the southwest of the point of blasting 1 1600 GOO lbs Ibs of powder was placed in the 36 holes and connected for firing The detonation of this shot was effective 2500 sq yards of rock formation rose into the air all a few feet the thc loose material worked toward to toward toward to- to ward the outside edges and the rock rack raised to the top of th mass s. This was followed followed- by a heavy rumble r. r as ns the mass rested back down into position position position po po- without any flying pieces leav leaving leaving ing the mass Man Many Forest Service officials W were lC present at this demonstration EOW C Inspector Ben Schubert Forest Supervisor J J. J W. W Humphrey Agin Acrin Forest Sop Van Boskirk Rangers V Wells ells Thursby and Ed P. P Cox and the Supt of or both camps on tho Manti ManU Forest In addition to others were there |