Address: south of 69th Way off 129th Avenue SE, Newcastle. Few structures remain today which evoke suburban Newcastle's origins as a mining center. Discovered in 1863, by 1883 the Newcastle mines produced 22 percent of the coal shipped from the Pacific Coast and 55 percent of the coal from Washington Territory. The Newcastle Cemetery is one of the few reminders of the area's mining history and of the miners and their families who came from all over North America and Europe to the coal fields.