What crews and managers said afterwards
These notes refer to named assignments on this site: utilization studies, delay maps, and monthly briefings. Voices differ; one of them asked for a shorter owner page we had not included.
They sat through two night shifts with our loader operators and coded waits the way we actually speak on the radio. The utilization charts matched the week we remembered, including the day the crusher bearing went. I still wish they had given us a one-page version for the owner, who does not read delay codes.
The pit-to-plant map showed our queue sitting on the wrong pad. We moved the waiting line ten metres and the trucks stopped blocking the weighbridge. It was a small change. The walk that found it was not.
Monthly briefings arrive before our bank meeting. I can point to loader hours and dredge output on the same page. They refused to guess a week when our sheets were incomplete, which annoyed me at the time and later saved an awkward question.
I expected outsiders with clipboards who would not climb the bench. They climbed. They also asked me to explain every abbreviation on the sheet before drawing a single line. That patience is why the crew still fills the delay column.
A longer note from Dong Nai
A basalt plant asked for pit-to-plant delay mapping after trucks began blocking the weighbridge each mid-morning. We walked the pad with the plant manager, timed the queue, and drew the waiting line on the existing survey. Moving the line ten metres cleared the scale. The assignment did not change the crusher setting. It changed where people stood. The manager still keeps that sketch on the office wall.
A limestone week in Kien Giang
The utilization study there covered two night shifts. Delay codes were rewritten with the radio language of that pit. The charts later matched the week the crusher bearing failed, which mattered because the owner had been told the fleet was “lazy.” The superintendent later asked for a one-page owner summary we had not scoped. We added it on a later visit rather than pretending the first pack had included it.