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露天矿最优块度的概念，也就是与穿孔、爆破、铲装、运输和碎矿的最低综合成本相应的岩矿破碎程度，是30多年前产生的。最近，由ICI炸药集团加拿大公司和其它部门利用最新技术完成的现场研究表明，最优块度这个最终目的行将成为现实。采矿工业中出现的、使现场综合研究成为可能的主要技术进步，是通过图像分析。激光制图、全球定位系统、钻机、电铲和运输汽车的监控以及数字通讯数据传输装置来实现自动的破碎效果评价。描述了评价破碎效果和估量破碎效果对矿山生产系统影响的要求，通过参考所选的实例研究，概述了最新适用技术的应用。
The concept of the optimal block of the opencast mine, which is the degree of rock crushing that corresponds to the lowest integrated cost of perforation, blasting, shoveling, transportation and crushing, was generated more than 30 years ago. Recently, field studies conducted by ICI explosives group Canadian companies and others using state-of-the-art technology have shown that the ultimate goal of optimal fragmentation becomes a reality. The major technological advances that have emerged in the mining industry and made comprehensive on-site research possible are through image analysis. Laser mapping, GPS, drilling rigs, shovels and monitoring of transport vehicles and digital communications data transmission devices to achieve automatic crushing effect evaluation. Describes the requirements for assessing the effect of crushing and of estimating the effect of crushing on the mine production system. The application of the latest applicable technology is outlined by reference to selected case studies.