Anupam (25 November 2022). "Diamond Drilling". Metallurgist & Mineral Processing Engineer. Archived from the original on 12 February 2023. Retrieved 12 February 2023.
Anupam (25 November 2022). "Diamond Drilling". Metallurgist & Mineral Processing Engineer. Archived from the original on 12 February 2023. Retrieved 12 February 2023.