What substance is processed in a Ginnery?

A ginnery is a facility built around a single, crucial machine: the gin. The name is a shortening of the word "engine," and the specific machine in question is the one famously invented by Eli Whitney in 1793. Its purpose is to process the fluffy bolls of the cotton plant by mechanically separating the valuable fiber, known as lint, from the plant's numerous and sticky seeds. Before this invention, the separation process was a slow and laborious task that had to be done entirely by hand, limiting large-scale production.

The invention of the cotton gin had a massive and complex impact on world history. By making the cleaning process incredibly efficient, it transformed the crop into a highly profitable commodity, fueling the textile mills of the Industrial Revolution. This efficiency, however, created an immense demand for more raw material. In the American South, this tragically led to a vast expansion of the institution of slavery, as more and more enslaved people were forced to plant and harvest the crop to feed the gins.

In a modern ginnery, the raw, harvested bolls are first dried and cleaned of any leaves, stems, and dirt. The material is then fed into large, automated ginning machines that pull