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N ~ <br />..-' 1 1 <br />1 <br />. ... ± <br />~, <br />~• ~ j ~ ~ / ~~ 10PERATIONS <br />r, if J'~`~~~Field preparation for the blast monitoring program began <br />i ~ r <br />k' ..... `~;+Friday May 25, 1979. Inability to obtain desir:d ,:.onitoring <br />~-%'`•?^~..~instrumentation over the weekend made it impossible to monitor <br />~ ;w - <br />. ••- ~-"~~,~a Winslow shot on Monday, May 28. <br />~' -'.~ <br />t,: , .. a <br />;~,~..„'._~\Inclement weather, the shortages of diesel fuel and other quarry <br />- .~ <br />~~-''•~•' joperational problems delayed the attempt to blast again until <br />LJ •. <br />~~•.. <br />"' ~~ ~*~~•~~1JUly 3, at 4:00 PM MDT. Monitoring instrumentation was set up <br />;~ ~ti..: ~., <br />i.,--.'.:~~;v::^_ on the morning of July 3, <br />..e .;.~ <br />' ~~`•~Dr. David Butler, Mr. Dean Brooks and Mr. Don E:ansen installed <br />•~'., ~: <br />jj~~ `--_ and operated the monitoring equipment. Their observations on <br />~+.,~-',. perceptible ground motion and other effects are included in <br />Imo.' .,j%'.~' <br />~,~ this report. <br />L~ ~~` <br />~- ;.~* <br />.~- <br />'"3 <br />'~` ~ :':,Instrument sites were chosen to provide measurements of the <br />..~ <br />`~~,~~-' :-ground motion at the Painter house, and at critical points <br />..~:` <br />- '•'~between the house and the shot point. Seismographs were de- <br />F~.w~1, <br />t...~ <br />y. ~'~•~C..ployed at the house, at the rock overhang .above the house, <br />~- <br />:r•~~";~~'~''on the ridge separating the house and quarry and at the conveyor <br />`t'•• <br />-..... <br />`^y[yin the quarry (Figure 2). Relative positions of monitoring <br />~ ..,~„'~ <br />"" `'"--•• • sites are' shown in Table 2. <br />a~A'~, .".~ , <br />~ ~••~ <br />~j.T~~,. N,onitoring instrumentation consisted of the following: <br />SITE INSTRUMENTATION <br />~ , - <br />...,~„ . ~ <br />3 <br />~.' .. L <br /> <br />~ House 3 Sprengnether MEQ-800-B portable <br /> <br />` ''"•~ seismographs <br />:~ <br />'" <br />~ ~ ""~ <br />}. 1 Sprengnether 5-6000 3-component geophone <br />_, '.e <br />~". :; '.;~: ~ Overhang 1 Sprengnether VS-1100 3-component <br />~ <br />Ci ( ~ engineering seismograph <br />• ;?a. 1 Sprengnether 5-6000 3-component geophone <br />, ( .. ~Y, <br />• ..., <br />~ <br />MICROGEOPHYSICS <br />. <br />