what was the immediate impact of the establishment of the mill
Answers
run-of-the-mill is a common, everyday, ordinary item that does not stand out from the rest. Something or someone that is "run-of-the-mill" is probably not notable. The phrase "run of the mill" appears to have originated from early factory quality control and described work that had not been graded and was therefore unlikely to be either exceptionally good or exceptionally bad.[1]
There are many subjects for which reliable sources independent of the subject exist. One may assume on this basis that they are notable. There are just so many of these things in the world, which are so commonplace that if an article on each were to be created, there would be so many articles on these alone, possibly more than there are total Wikipedia articles to this day and Wikipedia would be clogged with them, in the sense that it would be harder to structure content and it would make it hard to find notable material.