06/06/2026
Part 3 of our three-part series about Black Diamond. Today, Sat. June 6, 2026, the Black Diamond Historical Society is celebrating the 50th anniversary of their 1976 founding.
Black Diamond’s Story
This Saturday, June 6th, from 10 am to 3 pm, Black Diamond celebrates the 50th anniversary of its Historical Museum’s founding, featuring a ribbon-cutting and unveiling of a new underground coal mine exhibit. This community event is free to all, with festivities enveloping the 1886 railroad depot that now serves as the Museum. It’s located at 32627 Railroad Avenue, near the famous Black Diamond Bakery.
The origin of coal mining dates back to 1880, when the Black Diamond Coal Mining Company (BDCMC) of Nortonville, California, began searching for new coal reserves to serve San Francisco’s growing demand. With discoveries of quality coal in the Washington Territory, the company sent Victor Tull to explore south King County. Along the Green River, Tull found exposed coal seams and followed the strata two miles west. On a creek near a lake in Section 14, Tull found the same seams and sent 880 pounds of coal back to San Francisco for testing. It proved excellent.
In 1882, P. B. Cornwall and Morgan Morgans, President and Superintendent of BDCMC, traveled north to investigate. What they found were quality coal beds, ample timber supplies, and plenty of nearby lakes and streams. What they needed was a railroad. For without a railroad, there could be no coal mine; but without a coal mine, there would be no railroad.
With two coal mining companies to serve in Black Diamond and Franklin, a deal was struck with the Columbia & Puget Sound Railroad to extend its rail line south from Renton. The first train reached Black Diamond in December 1884 and Franklin in April 1885. Coal was soon shipped to Seattle’s ports, and the Green River district became a hotbed for coal mining. By the turn of the century, there were nearly 3,500 people living in Black Diamond and more than 1,000 in Franklin.
In 1896, Pacific Coast Company acquired the Franklin mines after the Oregon Improvement Company was placed in receivership. Pacific Coast was a conglomerate comprised of Pacific Coast Coal (PCC), Columbia & Puget Sound Railroad, and Pacific Coast Steamship Company, offering mine-to-market capabilities under a single entity.
Two years later, PCC bought Eugene Lawson’s coal mines, located just east of Black Diamond. In 1904, Lawson helped broker the deal by which PCC acquired BDCMC’s mines and company town. With operations in Newcastle, Franklin, Lawson, and now Black Diamond, Pacific Coast Coal became the second-largest coal producer in Washington, trailing only the Northwestern Improvement Company, owned by Northern Pacific Railway.
In the early days, the coal miners had no union. Still, mining could be lucrative, and many miners prospered. In 1907, the United Mine Workers of America organized a local union. When World War I produced coal shortages, prices rose, and so did wages. Production boomed throughout the war, and 1918 proved to be the peak coal year in Washington state, with 4.1 million tons mined.
When the Great War ended that same year, prices slumped, and coal companies tried to cut miners’ wages. In Black Diamond, a strike and company lockout embittered town folks on both sides of the labor dispute. Striking miners were booted from their company-owned homes. Tim Morgan, a thorn in the side of PCC, offered land to the striking miners to build new homes, and the town of Morganville was born.
Black Diamond’s mines slowly closed, and in 1927, the last big operation, Mine 11, was shuttered. PCC next opened a new operation halfway between Maple Valley and Renton. They called it the New Black Diamond, but it was a poor substitute for the real thing. Plus, a thousand miles south, the oil fields of Los Angeles were pumping record amounts of petroleum. Railroads converted locomotives to diesel, and fuel oil replaced coal for heating buildings and powering industrial machinery. San Francisco’s demand for coal was concluded by 1919. And as hydroelectric dams were constructed on Washington’s rivers, electricity prices plummeted, further reducing coal’s importance as an energy source.
Pacific Coast Company disbanded Black Diamond as a company town in 1939. Homes and lots were sold to the families living there. Then in 1953, PCC agreed to sell all its King County land and mineral holdings to Palmer Coking Coal, which moved its headquarters to Black Diamond in 1958. As coal mining continued to wither, the town’s population fell to less than 1,000. But the town’s spirit could not be weakened, and in 1959, Black Diamond was incorporated as a city.
By 1975, Black Diamond was forced to merge into the Enumclaw School District. In the 1980s and 1990s, Black Diamond began incorporating surrounding areas, including Lake Sawyer in 2000. The signing of the Black Diamond Urban Growth Area Agreement in 1999 paved the way for rapid growth beginning in 2017, with the vast majority in Ten Trails. Today, the city’s population is over 7,000 people, with a new elementary school on the horizon.
This 1887 illustration of Black Diamond was created by Edward Lange for the company’s marketing purposes. The collage features eight distinct views of the town. Company officials named in the collage include Morgan Morgans, Supt.; W.S. Moore, Clerk; John M. Phillips, David D. Davis, & David Webber, Foremen; Alex Turnbull, Machinist; Atkinson & Calhoun, Store Proprietors; James A. McBean, Bookkeeper; W.C. Finn, Charles George, and Tallie Evans, Clerks; Tallie Jones, Teamster; Axel G. Hanson, Station Agent, and N.H. Martin, Agent for Black Diamond Coal Company in Seattle, Wash. Copies of this picture could be sent by mail, Price $1.00. Address: Edward Lange, Artist, Olympia, Wash.
This image comes courtesy of Ron Edge, a collector of historical photography, and Paul Dorpat, co-founder of HistoryLink.org, whose “Now & Then” column ran weekly in the Seattle Times from 1982 to 2019, totaling over 1,800 articles. Each week, Dorpat paired a historical and a present-day photo of the Seattle area from the same point of view.
This “When Coal Was King” column by Bill Kombol was originally published in the June 2, 2026, Voice of the Valley.