Mr. Gadget - this is cool stuff. Do you have any words of wisdom on the change in development that would ne need as the exposure time is increased to maintain a consistent contrast?

I had an old Kodak Technical document from the late 1970's that had a set of tables showing the percentage development time change needed as the exposure time increased. But I have no clue where it is and I suspect the information is way out of date for today's emulsions.