The first half hour of every shift was lost
Operators punched in late and the first dumper reached the shovel well after shift start. Nobody had a daily number for it, so it was never managed.
32 min
time to first load at the start
Case study · cement captive limestone mine
Case study: a faster shift start at a cement captive mine
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Punch-in joined with GPS
Biometric punch-in times were matched with the first GPS trip of each operator's machine. The gap between shift start, punch-in and first load became a daily report per shift and per operator.
~150,000
trips analysed
Jan–Sep 2026
period
Twenty points more on-time, fifteen minutes back
Supervisors used the daily report to follow up late starts. On-time punch-in rose for every shift, with the largest gain on shift A.
63% → 83%
on-time punch-in
48% → 74%
shift A on-time punch-in
32 → 17 min
time to first load
Questions about shift start case study
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