Bijih: Perbedaan antara revisi
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== Ekstraksi ==
[[Berkas:Simplified_world_mining_map_1.png|thumb|right|150px|Beberapa cadangan bijih di dunia]]
[[Berkas:Simplified_world_mining_map_2.png|thumb|right|150px|Beberapa cadangan bijih lainnya di dunia]]
{{utama|Pertambangan}}
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The basic extraction of ore deposits follows the steps below;
# [[Prospecting]] or [[Mineral exploration|Exploration]] to find and then define the extent and value of ore where it is located ("ore body")
# Conduct [[mineral resource classification|resource estimation]] to mathematically estimate the size and grade of the deposit
# Conduct a pre-feasibility study to determine the theoretical economics of the ore deposit. This identifies, early on, whether further investment in estimation and engineering studies is warranted and identifies key risks and areas for further work.
# Conduct a [[feasibility study]] to evaluate the financial viability, technical and financial risks and robustness of the project and make a decision as whether to develop or walk away from a proposed mine project. This includes mine planning to evaluate the economically recoverable portion of the deposit, the [[metallurgy]] and ore recoverability, marketability and payability of the ore concentrates, engineering, milling and infrastructure costs, finance and equity requirements and a cradle to grave analysis of the possible mine, from the initial excavation all the way through to reclamation.
# Development to create access to an ore body and building of mine plant and equipment
# The operation of the mine in an active sense
# [[Land rehabilitation|Reclamation]] to make land where a mine had been suitable for future use
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== Perdagangan ==
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