In the 1892 California Mineralogist report on Hayden Hill, it was duly noted that over $2,000,000 in gold had been extracted. It was noted there was a good quality kaolin deposit there as well. However, since it was so far removed from any rail transportation service, that the deposit was deemed worthless. Kaolin historically was used in porcelain, but the majority of it is used in paper manufacturing that gives the glossy paper its sheen.