Science Art: Head Frames, Figs. 3-6, from The Design of Mine Structures, 1912.

Types of Head Works for Mines:

Types of head works for mines. These frames helped draw out the rocks that the miners were busy breaking up deep underground. At the time this book was published, many head frames were made of timber; these, based on working mines in Montana, were made of steel.

From The Design of Mine Structures.