The paint/primer was made from the hematite mined north of Rawlins, henceforth the name. It was used to protect the Brooklyn bridge when it was built. Carl -- "With the first link, the chain is forged. The first speech censured, the first thought forbidden, the first freedom denied....chains us all irrevocably. The first time any man's freedom is trodden on, we are all damaged." -- Capt. Picard, STNG