The start date for the sand pit is 1880 (Trainmaster Alpha 2). The glass factory and sand cargo have a start date of 1800. Is this difference appropriate? I think the sand pit start date should be the same as the glass factory.
When I first put the glass factory in it was getting sand from two other sources, the shipyard and a mine. I think I changed some things so only the shipyard was giving sand. I fixed the date on the sand pit to 1899. Will upload it with the next pak of files.
Actually, after thinking about, I made the sand pit available in 1880 because before that it could be placed or added via event and still work, it was its spawning that was delayed. But I have changed it back to 1800 anyways.