A gold discovery does not translate into supply quickly. The interval between finding metal and shipping it is measured in years, and the reasons are structural.
Defining the deposit takes years of drilling
An initial discovery hole proves metal exists at one point. Establishing its extent, shape, grade distribution and continuity requires a drilling programme covering the whole body.
Drilling is slow, weather dependent and expensive, and results have to be assayed and modelled before the next holes can be sited sensibly.
Until that model reaches a defined standard of confidence, no financier will treat the deposit as a reserve rather than as a possibility.
Studies proceed in a required sequence
The industry advances projects through successive studies of increasing accuracy, each one testing whether the project still makes sense before more is spent.
Each stage requires metallurgical testing, engineering design, cost estimation and environmental baseline data that must be gathered over full seasonal cycles.
The sequence exists because lenders will not fund construction on preliminary numbers, and it cannot be compressed far without losing the confidence it is designed to create.
Permitting depends on parties outside the company
Approvals involve environmental assessment, water rights, land access, waste storage and consultation with communities and, in many jurisdictions, indigenous groups.
These processes run at the pace of the authorities and stakeholders involved, and legal challenges can suspend them after they appear complete.
Permitting has become the longest single stage for many projects, and it is the stage a developer can influence least.
Financing arrives only when risk is defined
Building a mine requires capital far beyond what exploration companies hold, and the money is raised against a completed study and secured permits.
Metal prices at the moment of financing therefore determine which projects proceed, and a price decline during the study period can shelve a technically sound deposit.
Projects shelved this way often sit for years and are revived by a later price recovery, which is why supply responds so slowly to price.
Construction is a large industrial project
A modern mine needs a processing plant, power supply, water management, tailings storage, roads and often accommodation for a workforce in a remote location.
Commissioning follows construction, and plants routinely take several quarters to reach design throughput as operational problems are found and corrected.
Adding these stages together explains why higher prices today change production several years from now rather than this year.