Pensilva Plenty of cars at the bottom of Gold Diggings quarry

Men Among Boys - Top Rock Crawling Trails

Hydraulic Fracturing Brings Money, and Problems, to Pennsylvania - The New York Times

Dangerous beauty of Cornwall's abandoned flooded quarries - Cornwall Live

Ghost Towns of the Clarion River Corridor: Arroyo

BoDean Co. facing record $8.6 million fine for stormwater management, discharge violations at Mark West Quarry

Gold Diggings Quarry Bodmin Moor Stock Photo - Alamy

A new coal mine is opening in Pennsylvania. Is Trump to thank?

A Hidden Gem Day Trip Found Deep in Downeast Maine

Sacrificial Lands: Mining the Minerals to Fuel the Green Revolution and a Post-Carbon World - Modern Diplomacy

A Journey up the Hudson River from the Battery to Troy