Georgius Agricola,
De re metallica — Book IV
(1912)
“ Now, before I deal with the methods which must be employed in working, I will speak of the duties of the Mining Prefect, the Bergmeister, the Jurors, the Mining Clerk, the Share Clerk, the manager of the mine or tunnel, the foreman of the mine or tunnel, and the workmen. To the Mining Prefect, whom the King or Prince appoints as his deputy, all men of all races, ages, and rank, give obedience and submission. He governs and regulates everything at his discretion, ordering those things which are useful and advantageous in mining operations, and prohibiting those which are to the contrary. ”
