This label is a mistake. The Spring Creek Coal mine is the separate mine to the northwest. This marker is on the West Decker coal mine. The mine to the east is the East Decker mine. These names can be verified on a map from the state regulator: https://discover-mtdeq.hub.arcgis.com/datasets/0ec1d6d3b5424618a0ac08129f7ac045_0/explore