A gigantic map of all the cool plaques in the world. A project of 99% Invisible.

SPRUCE PINE MINING DISTRICT

Mica, feldspar, quartz deposits found in region 25 mi. long, 10 mi. wide. Commercial production of mica emerged 1850s.Plaque via North Carolina Highway Historical Marker Program, and is used with...

Mica, feldspar, quartz deposits found in region 25 mi. long, 10 mi. wide. Commercial production of mica emerged 1850s.

Plaque via North Carolina Highway Historical Marker Program, and is used with their permission. Full page here (NC Marker ID N45)

Nearby Plaques On Google Maps