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Título

OPEN PIT SLOPE DESIGN APPLIED TO MINERAL RESERVE STATEMENT RULES, SEC S-K 1300

Resumo

The pit slope design is one of the most influential factors in the mineral resource and reserves statements (MRMR). The lack of information and the low reliability of geotechnical input may mean significant losses in mineral reserves due to either an overly conservative pit slope design, or an unsafe and impractical pit slope design. This paper presents good practices for pit slope design, highlighting the interactive process between mine planning and geotechnical areas, which should take place in order to ensure standardized concepts and traceability throughout the entire pit design process, from the mathematical evaluation of the net present value to the operationalization of the pit shell. We believe this methodology will increase the reliability of pit design, in accordance with the regulations of the SEC (Securities and Exchange Commission) and the international standards of mineral reserves statements outlined by CRIRSCO (Committee for Mineral Reserves International Reporting Standards).

Palavras-chave

Pit slope design, geotechnical input, mine planning, MRMR, SEC.

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