To answer the above, I have no clue whatsoever when it was coated last, but I would guess 2007. But, it might have been 2006 for all I know. As for Kodak processing, yes, it was round the clock 24/7/365 at many sites around the world, on every continent and major island. Now, one plant does all of it.
Actually, the coating of Kodachrome was nearly at that rate to keep up with the huge market as well. After all, there were the sheet films, 120, and 35mm as well as 8mm and 16mm. That was a lot of film.
Now, as to making 1 master roll, that was my estimate and using some research, the author of the article came up with the same figures after talking to people at Dwaynes, so I have some confidence in that. Even though 1 master roll can be made in an afternoon, prep time is weeks and weeks of work making the 9 emulsions and making the rem-jet support. Along with that are the preparation of any special chemicals that the film needs. All of this has to come together in one furious day of work that actually still represents a lot of time and labor. That has to return a profit for the entire roll!
Also, since the emulsion sizes at EK are fixed at 3 different levels, and coating width and length are fixed due to machine size, then any excess or underrun are "waste". The excess emulsion probably won't work in any other product and therefore would be waste. It certainly cannot be kept for another run a year later. The problems compound as the input to film manufacture consists of spoilable chemicals and materials that have a limited lifetime.
With other products that coat daily, this is not a problem. You coat until you are near the end of a batch of emulsion and then make a new one and keep going.
This is a simple view of the making. As for processing, the manual tells you how many feet of film you have to do each day and week to keep the Kodachrome process happy. The pH of the 3 color developers is very high and they go out of control very easily. It is not a "friendly" product to make or process.
PE