পদ্ধতির তুলনা করুন

	লেনের কাট-অফ গ্রেড মডেল	বন্ড ওয়ার্ক ইনডেক্স	লার্চস-গ্রসম্যান অ্যালগরিদম
ক্ষেত্র	খনি প্রকৌশল	খনি প্রকৌশল	খনি প্রকৌশল
পরিবার	Process / pipeline	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1988	1952	1965
প্রবর্তক	K. F. Lane	Fred C. Bond	Helmut Lerchs and Israel Grossmann
ধরন	Economic optimization framework for ore classification	Empirical method for grinding energy estimation	Graph-theoretic algorithm for pit limit optimization
মৌলিক উৎস	Lane, K. F. (1988). The economic definition of ore: cutoff grades in theory and practice. Mining Journal Books, London.	Bond, F. C. (1952). The third theory of comminution. Transactions of the American Institute of Mining and Metallurgical Engineers, 193, 484-494.	Lerchs, H., & Grossmann, I. F. (1965). Optimum design of open-pit mines. Canadian Mining and Metallurgical Bulletin, 58(633), 47-54.
অপর নাম	Lane Model, Cut-off Grade Optimization, Lane's Optimization Model	Bond Work Index, BWI, Bond Index Test	Lerchs-Grossmann Method, LG Algorithm
সম্পর্কিত	3	3	4
সারসংক্ষেপ	Lane's Cut-off Grade Model, developed by Kenneth F. Lane and formalized in his 1988 book, provides a rigorous economic framework for determining the minimum grade at which ore should be mined and processed. It accounts for variable mining costs, metallurgical recovery, and commodity prices to optimize profit per unit processed. The model is foundational in mining economics and underpins daily operational decisions at thousands of mines worldwide.	The Bond Work Index, introduced by Fred C. Bond in 1952, is an empirical parameter that characterizes the resistance of an ore to grinding in a tumbling mill. It is defined as the kilowatt-hours per short ton (kWh/st) of electrical energy required to reduce a coarse ore from theoretically infinite size to 80% passing 100 micrometers. The Bond Index is foundational in mineral processing plant design and cost estimation worldwide.	The Lerchs-Grossmann Algorithm is a graph-theoretic method for determining the ultimate pit limit in open-pit mining operations. Introduced by Helmut Lerchs and Israel Grossmann in 1965, it maximizes the net present value of extracted ore while respecting slope stability constraints. This algorithm forms the theoretical foundation for most modern pit optimization software.