 The kingdom's diplomatic network around Europe was ordered to seek out experienced workers and trade secrets, paying generously, and internally a successful organized search was made for sources of the correct minerals, with local authorities sending samples to the capital.Charles also founded royal factories for making tapestries and "pietre dure".Naples already had many factories making maiolica and other wares, often as a sideline from bricks, but the recruiters for Capodimonte rather looked down on the "maiolica" workers, and the main roles were given to imported workers.