Creosote Oil

In order preserve Wooden Ties against rot and decay we need to coat them with Creosote Oil. The particular properties of this oil derived from Coal or Wood helps to waterproof and protect wood against many forms of insects and bacteria that would otherwise destroy it in short order.

Creosote Oil is obtained by cooking Coal or Wood in a Coke Oven. It is basically a free byproduct of the process. Though you will need multiple Ovens to produce it in quantity.