What makes quarrying different
Three things break generic ERP in a quarry. Material is measured by weight, not count. One input becomes several outputs at different values in a single process step. And the point of sale is a weighbridge at a gate, often with poor connectivity, operated by someone under time pressure with trucks queuing.
Any system that does not handle those three realities becomes a parallel record-keeping exercise, which is worse than no system at all.
The four leaks
Across the quarry operations we have implemented, losses cluster in the same places: unrecorded dispatch, diverted trips, diesel, and subcontractor overbilling. Each of these is a data-capture problem before it is a governance problem. Policies asking people to be careful do not fix them. Hardware that records automatically does.
What good looks like
The weighbridge writes the weight into the transaction. The gate camera confirms the plate. GPS confirms the route. The beltscale records what the crusher actually produced. Diesel is issued against a vehicle and reconciled against what that vehicle did. Job-work bills are checked against measured production before approval.
At that point the finance function is working from complete data, and month-end stops being an investigation.