Orangeman, we know the ovens operate around the clock, seven days a week. I would think that someone's there all the time, but honestly I'm not certain that's true. If it is the case, it may be what JS was referring to when he indicated multiple shifts.
As I gather it, the process has been refined to the point that the unloading and loading of the ovens routinely occurs during the day shift. I'm not certain if schedules are such that ovens don't require action over the weekend.
I certainly don't know much about all the different media's they're producing. I would think that different media would require operating times, temperaturs, etc. What's exciting is in spite of the differences, CTKH can time the critical event so they can be done during the day shifts.
Gary