TERBRUGGE, P.J.; ARMSTRONG, R. Vertical pit mining – an alternative to open pit mining for massive/shallow orebodies. International Kimberlite Conference: Extended Abstracts, [S. l.], v. 11, 2017. DOI: 10.29173/ikc4013. Disponível em: https://ikcabstracts.com/index.php/ikc/article/view/4013. Acesso em: 17 jul. 2024.