One of the more interesting legacies of coal mining in South King County were the stockpiles of coal slag that burned for decades and created a landscape product called red cinders. The story began in the 1880s when miners found rich seams of the black-colored ‘diamonds’ that gave the area’s first coal mining town its name––Black Diamond.
Bill Kombol is a journalist for Voice of the Valley, focusing on local history and stories related to Maple Valley, Washington. His articles often explore the region's past, particularly during the era when coal mining was prominent. Bill's work aims to preserve and share the rich history of the area with the community.