considerable part of the pyrite production began to be destined to the Polo Químico de Huelva, where several industrial plants operated, which were abundantly...

creation. The company became closely linked to the development of the Polo Químico de Huelva in the 1970s, where one of its factories was located. In 1974, the...

declined, partly due to the transfer of some plants to the new Polo Químico de Huelva and partly due to the depletion of the mines. The exception to such...

operations in the area. This was because the Fertiberia plant at the Polo Químico de Huelva had changed its production method and no longer needed the crude...