Panjaitan, F, Hall, A & Pasek, I. M 2024, 'Mass excavation optimization of 603 crusher complex for Grasberg block cave mine  ', in Daniel Johansson & Håkan Schunnesson (eds), MassMin 2024: Proceedings of the International Conference & Exhibition on Mass Mining, Luleå University of Technology, Luleå, pp. 62-73.
(https://papers.acg.uwa.edu.au/p/2435_A-06/)
Abstract: The Grasberg Block Cave mine (GBC) started production in December 2018 and has been rapidly increasing its production milestones since. The GBC’s ore handling system includes the 603 Crusher Complex, which was designed and developed to meet 130,000 tonnes per day (tpd) production targets. The 603 Crusher is a unique design that sets itself apart from the previous 601 and 602 crusher complexes. It features a complex design that includes an unloading station, crusher chamber, coarse ore bin, eccentric drive chamber, and conveyor drift with total excavation of 2,851 meter equivalent. This paper outlines the complex aspects of the design, sequencing, QAQC and mass excavation techniques used in the development of the 603 Crusher complex. The construction of the 603 Crusher differs significantly from the 601 and 602 complexes as it exclusively utilizes mechanized mining methods, removing the need for manual handheld techniques. The strategic shift resulted in a significant reduction in development time, completing the project in 15 months as opposed to 24 months for 601/602 complexes. The main driver in this shift was safety to our employees and whilst this project was completed ahead of schedule zero injuries were recorded in this time. This paper highlights the importance of implementing best mining practices improving efficiency and safety in mining operations.