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This paper focuses on the sequencing and scheduling problem of open pit mining,with the allocation of loading equipment considering a medium-term horizon.This study considers the existence of a heterogeneous loading equipment fleet and twotypes of mineable material, namely ore or waste rock. For the mining of ore, the followingrequirements are taken under consideration: the mixture quality, a crusher, theprocessing plant capacity and a stockpile, called ROM stockpile. In this context, wepresent a mathematical model in mixed integer linear programming, supported by analgorithm that is responsible for moving the time horizon at each model run, aimingto generate mining orders resolved with optimality. Together, these orders describe theloading equipment mining plan.Esse trabalho tem seu foco no problema de sequenciamento e programação dalavra em mina a céu aberto com a alocação de equipamentos de carregamento, considerandoum período de médio prazo. Nesse estudo, considera-se a existência de umafrota heterogênea de equipamentos de carga e de dois tipos de materiais lavráveis,sendo minério ou estéril. Para a lavra de minério, são contemplados requisitos dequalidade da mistura, um britador, capacidade da usina de beneficiamento e uma pilhade estoque, denominada pilha de ROM. Nesse contexto, apresenta-se um modelomatemático em programação linear inteira mista, apoiado por um algoritmo responsávelpor mover o horizonte de tempo, a cada execução do modelo, com intuito degerar ordens de lavra resolvidas com otimalidade. Juntas, essas ordens descreverão oplano de lavra dos equipamentos de carga

Mathematical model and supporting algorithm to aid the sequencing and scheduling of mining with loading equipment allocation