Chromite (Chrome Ore) Production_

USGS is primary; BGS provides an independent cross-check for 1970-74 with ONE real disagreement flagged (1970: BGS 220,000t vs USGS 120,000t; 1974: BGS 140,000t vs USGS 175,000t) -- both kept as separate lines per this project's overlapping-disagreeing-sources rule, not resolved to one number.