The community's historical association with coal mining began in 1873, after the discovery of low-grade coal in the local area.

Small pieces of low-grade bituminous coal.

Following some adjustment, the ejector improved smoke deflection and fuel consumption, allowing it to steam well with low-grade coal.

There are also reservoirs of low-grade coal, chalk, bauxite, and zircon.

Chile's principal oil reserves, though small, are located here, along with some low-grade coal.

Waste coal is low-grade coal unsuitable for shipping and sale which would otherwise be reburied.

While the operation lasted, six to ten tons of medium- to low-grade coal were extracted each day from the mine's 900 feet of tunnel.

The Czech Republic is reducing its dependence on highly polluting low-grade brown coal as a source of energy.

This is a seam of low-grade coal called lignite.

The stoker made higher steaming rates possible, and it was hoped that mechanical stoking might enable the burning of low-grade coal.