Permit to first dirt: the real lag at a mine site
Permit approval dates get tracked like scripture in this business. They go in the model, they go in the research note, and then everyone waits for the thing the permit was supposedly for: dirt moving. Except the permit date and the first bench cut are almost never the same event, and the gap between them is where a lot of supply forecasts go wrong.
There's no single number for how long that gap runs. A brownfield expansion at an existing operation with its own power, water and haul roads already in place can go from signed permit to visible earthworks in a matter of months. A greenfield project needing a new access road, a camp, and a financing package can sit for a year or more after approval with nothing on the ground but survey pegs. The permit is a regulatory milestone. Construction start is a capital and logistics milestone, and those two calendars run on different clocks.
Why the lag happens
Financing close is usually the biggest piece of it. A lot of permits get granted before a project has its funding fully locked, especially for juniors and mid-tiers waiting on debt facilities or offtake agreements. Nobody mobilizes an EPC contractor on a permit alone. Final investment decision, not permit date, is the real trigger, and FID can trail the permit by quarters.
Then there's procurement. Mills, crushers, SAG liners, conveyor systems, these are long-lead items, and a lot of operators place orders well before breaking ground so the equipment arrives roughly when the pad is ready. If those orders haven't gone in yet, that's a sign the permit is sitting on a shelf regardless of what the press release says.
Seasonality matters more than people outside the trade tend to credit. A permit approved in October for a site in a wet-season climate might just sit until the access roads are passable again. Site establishment crews aren't going to cut a box cut into a laterite cap that's turned to soup.
And sometimes it's simpler than any of that: the company got the permit it needed to satisfy a lender covenant or a board timeline, and the construction decision is still pending a commodity price that hasn't cooperated yet.
What shows up on the ground first
When dirt does start moving, the processing plant isn't the first thing to appear. The early signals are mundane: a laydown yard gets graded, a site access road gets widened and regraveled, a construction camp pad appears, topsoil gets stripped and stockpiled off to the side. The box cut or initial pre-strip on the pit itself usually comes next, well before any plant foundations go in. For anyone watching a competitor's site, plant steel is a late tell. The earthworks come first, often by a full construction season.
A permit approval tells you a project is now legally allowed to proceed. It tells you nothing about whether the owner has the cash, the contractor, or the weather window to proceed on any particular timeline. Treating permit date as a proxy for new supply timing is how capacity forecasts end up systematically early.
Watching the gap instead of guessing it
The honest answer to "how long is the lag" is that it depends on the project's financing status, its EPC readiness, and its climate, and none of those show up in a permitting database. What does show up, eventually, is the earthworks: a new access road, a graded pad, a stockyard that's grown, a pit outline that's expanded. Competitor Capacity exists for exactly that gap, reading named competitor sites on a quarterly cadence to log when a pit, a plant addition, or a stockyard changes, rather than waiting on a filing or a site visit that was never going to get scheduled in the first place.
If you're tired of permit dates that don't translate into supply dates, that quarterly change log is a reasonable place to start watching instead.