What is the fine-grained topic of the following text: The Union Pacific Coal Company opened the first underground mine in 1881 after construction of the Oregon Short Line Railroad from Granger to Oregon.Patrick J. Quealy (1857–1930) founded Kemmerer as an "independent town" in 1897 when he was vice-president of the Kemmerer Coal Company, located 6mi south of the original townsite. Only return the topic.
History of the Union Pacific Coal Company and the founding of Kemmerer