Hammer and Crack! Hammer and Crack!
In many old established mining areas throughout the world, there is a long tradition of mine spirits, in Cornwall these were known as the Knockers. There are also other names for these mine spirits; Knackers, Buccas, and Spriggans. The Knockers were thought to be small pixie like creatures. They inhabited the deepest parts of the mine, and it was belived they could be heard knocking and working their own lodes in the darkness.
The Knockers were thought to be benevolent, knocking at the richest of the lodes and showing themselves only to those that they favoured.
You need to treat Knockers with respect, whistling could offend them, as could intentionally spying on their work. Many miners left small offerings of food or tallow to appease them.
Can you find any Knockers in Wheal Mexico?