Every tick on the critical control checklist is true. The berm is there. The lock is on the crusher. The exclusion zone around the shovel is marked.
What the checklist never asks about is the person. Does the operator who moved up to the bigger trucks last month know the berm has to reach at least mid-axle height on the largest truck using the road? Or what to do when a grader has cut it down?
If you lead health and safety across ten or twenty mines, you can show the control is in place everywhere. You can't show, from a clipboard, that the people who depend on it understand it, or still did six months after the course.
Training supports the control. Is anyone verifying it?
In April, the International Council on Mining and Metals replaced the 2015 critical control guidance much of the industry works from with a single updated edition. It puts more weight on verification and on the front line, and it is precise about training: training is not a control in itself. It supports controls by giving people the knowledge they depend on.
Field verification checks that a control meets its performance requirements in practice, and it is good at that. The knowledge underneath usually gets checked once, at the end of a course, and assumed after that. A program that verifies the berm every shift and the operator's understanding once a year is strong on one side and thin on the other.
Ten sites make it harder
The standard is written once, at corporate. Each site applies it to its own trucks, circuits and ground, trains its own version, and reports completion.
A merger brings two sets of procedures and two training histories. When Arch and CONSOL combined as Core Natural Resources in January 2025, the new company owned 11 mines, and the people who learned the old versions were still on shift. NIOSH counted about 99,000 people working for contractors at US mines in 2024, roughly three in ten of everyone working there. Their training records belong to their employer. The controls belong to your site. And on rotating rosters, the crew briefed on a changed control on Tuesday may not overlap with the crew working that area next week.
Then there is time. The contractor who understood the crusher isolation at the spring shutdown may hold half of it by the next one. Nothing in the verification record would show you.
What makes a control hold
More field checks won't close this. Your supervisors probably do those well. What closes it is seeing, per person, what each one understands about the controls their work depends on, broken down to what each control needs them to know, and seeing when that understanding fades, for your own crews and contractors alike.
That record sits beside field verification and answers the question it was never built to ask. The verification record will always show the control was in place. The question for this year is whether the people keeping it there could tell you why.
This piece discusses critical control management and mine safety training in general terms and is not legal or compliance advice. Specific obligations depend on your operations, the rules they fall under, and your role.
