The 1870's. The Pompton Lakes area was surging with industry. Just down the turnpike, Paterson was making history with it's volume of silk, firearms and railroad car manufacturing. The time was just after the Civil War, and steel was taking over iron in the manufacturing world. Steel manufacturing requires lots of water. Pompton Township had lots of that, along with a history or iron and steel production, by then.
There was iron and coal coming out of Western New Jersey and Pennsylvania. The Morris Canal was moving the ore eastward to the cities. Steel mills on our rivers had easy access to the Morris Canal. They could get the ore cheaper, and get their product to the cities thanks to the canal.