To enable AN-FO .to' be used on an equal .weight basis wish Nitro Gl reerin.e expl3osives r smaller diameter bore holes became necessary With consequent modifications to drill steel and burden on holes, De't'onation of AN-FO "in small diameter holes proved successful' both with 'and without primer charges but some altorat-ions were required to. adopt Anoloder.s to the smaller -holes, Important factors in training all operators In the new charging method were the retention of imp-,cved, fragmentat'ion, avoidance of excel ive ove:break and keeping wall rock dilution 'to an absoluato mi. iArurle_x000D_
The_x000D_
successful storage of Ammonium 14t-rate in c"!ime.tic conditions 'with daily'.-' temperature fluctuationc above and below the critical' 90F, has. been "achieved,