A chain found in the midden.

The iron chain is a detachable link chain that was first introduced in 1873. It was widely used in early 20th centuries for agriculture use and industrial purpose. In specific, it was used for conveying equipment like hay bale elevators, in material handling, and also for general power transmission due to their simple design that allows for easy installation, repair, and length adjustment. It was likely used on agricultural equipment in the Olin farm.