Question: Don Chafin was a commander in a battle that took place in which year ?

full_context: Document 1: Colorado Coalfield War: The Colorado Coalfield War was a major labor uprising in Colorado between 1913 and 1914. Technically, this war is the Southern Colorado Coalfield War, as there were major Northern Colorado Coal strikes in 1912. It culminated in the Ludlow Strike, which ended as a massacre when the Colorado National Guard attacked a tent city occupied by about 1,200 striking coal miners and their families. In retaliation, the miners armed themselves and attacked dozens of mines over the next ten days, destroying property and engaging in several skirmishes with the National Guard along a forty-mile (64 km) front from Trinidad to Walsenburg. Between sixty-nine and one-hundred-ninety-nine people died during the strike. It was described as the "deadliest strike in the history of the United States".
Document 2: Hatfield–McCoy feud: The Hatfield–McCoy feud, or the McCoy-Hatfield feud or the Hatfield–McCoy war as some papers at the time called it, involved two rural families of the West Virginia–Kentucky area along the Tug Fork of the Big Sandy River in the years 1863–1891. The Hatfields of West Virginia were led by William Anderson "Devil Anse" Hatfield while the McCoys of Kentucky were under the leadership of Randolph "Ole Ran'l" McCoy. Those involved in the feud were descended from Ephraim Hatfield (born   1765) and William McCoy (born   1750). The feud has entered the American folklore lexicon as a metonym for any bitterly feuding rival parties. More than a century later, the feud has become synonymous with the perils of family honor, justice, and revenge.
Document 3: Coal Creek War: The Coal Creek War was an early 1890s armed labor uprising in the southeastern United States that took place primarily in Anderson County, Tennessee. This labor conflict ignited during 1891 when coal mine owners in the Coal Creek watershed began to remove and replace their company-employed, private coal miners then on the payroll with convict laborers leased out by the Tennessee state prison system.
Document 4: West Virginia coal wars: The West Virginia coal wars (1912–21), also known as the mine wars, arose out of a dispute between coal companies and miners. The first workers strike, in West Virginia, was the Cabin Creek and Paint Creek strike of 1912-1913. With help from Mary "Mother" Jones, an important figure in unionizing the mine workers, the miners demanded better pay, better work conditions, the right to trade where they pleased (ending the practice of forcing miners to buy from company-owned stores), and recognition of the United Mine Workers (UMW). The mining companies, however, refused to meet the demands of the workers and instead hired Baldwin-Felts Agents, equipped with high-powered rifles, to guard the mines, but more important to be strikebreakers. After the Agents arrived, the miners either moved out or were evicted from the houses they had been renting from the coal companies, moving into coal camps that were being supported by the Union. Approximately 35,000 people lived in these coal camps. It wasn't until a month after the strike began that it became hostile with the arrival of the Baldwin-Felts Agents who provoked the miners. The union began supplying miners with weapons: 6 machine guns, 1,000 high-powered rifles, and 50,000 rounds of ammunition.
Document 5: Frank Keeney: Charles Francis "Frank" Keeney Jr. (March 15, 1882 - May 22, 1970) was a union organizer during the West Virginia Coal Wars. He served as a rank and file leader during the Paint Creek-Cabin Creek strike of 1912-1913, and became president of United Mine Workers District 17 from his election in 1916 to 1924, where he played a leadership role during the strike of 1920-1921, leading up to the Battle of Blair Mountain.
Document 6: Coal Wars: The Coal Wars, or the Coal Mine Wars, were a series of armed labor conflicts in the United States, roughly between 1890 and 1930. Although they occurred mainly in the East, particularly in Appalachia, there was a significant amount of violence in Colorado after the turn of the century.
Document 7: Bill Blizzard: William H. "Bill" Blizzard (September 19, 1892 – 1958) was a union organizer, a commander of the miners' army during the Battle of Blair Mountain, and president of District 17 of the United Mine Workers. Blizzard is most remembered for his role in the Battle of Blair Mountain, leading the miners against the forces of Logan County sheriff Don Chafin. For his leadership role in the battle, Blizzard was charged with treason, but was acquitted at his trial on these charges. From that time forward, he remained an important leader within the UMW and organized labor.
Document 8: Hobet Coal Mine: The Hobet 21 Coal Mine in West Virginia was operational between 1974 and 2015. Straddling the border of Boone County and Lincoln County in the Appalachian Mountains, the Hobet 21 mine was one of the largest mountaintop-removal coal mining operations in West Virginia. Originally owned by Fil Nutter, the mine used both underground mining and strip mining techniques, and later even more intensive surface mining using a dragline. Increasing productivity and profitability encouraged workers to successfully strike for their health plan in 1993, which resulted in unusually thorough coverage for mine workers at this time. The Hobet mine was incorporated into Arch Coal in 1997, along with several other mines, following booming coal demand. The mine was sold two more times: to Magnum Coal in 2005 and to Patriot Coal in 2008. Patriot Coal subsequently went bankrupt in 2015, ending mining operations at Hobet for good. The Hobet 21 Coal Mine site was once a mountainous highland region covering about 25 square miles. Mountaintop-removal coal mining causes adverse environmental and human health effects. Notably, streams and springs can become permanently filled in with rubble and toxic runoff that concentrates downstream, polluting human water supplies.
Document 9: Charles Everett Lively: Charles Everett Lively (1887–1962) was a private detective affiliated with the Baldwin-Felts Detective Agency. He played an active role in the Coal Wars in Appalachia, and is chiefly remembered as one of the assassins of Police Chief Sid Hatfield.
Document 10: Battle of Matewan: The Battle of Matewan (also known as the Matewan Massacre) was a shootout in the town of Matewan in Mingo County and the Pocahontas Coalfield mining district, in southern West Virginia. It occurred on May 19, 1920 between local coal miners and the Baldwin–Felts Detective Agency.
Document 11: Harlan County War: The Harlan County War, or Bloody Harlan, was a series of coal mining-related skirmishes, executions, bombings, and strikes (both attempted and realized) that took place in Harlan County, Kentucky, during the 1930s. The incidents involved coal miners and union organizers on one side and coal firms and law enforcement officials on the other. The question at hand: the rights of Harlan County coal miners to organize their workplaces and better their wages and working conditions. It was a nearly decade-long conflict, lasting from 1931 to 1939. Before its conclusion, two acclaimed folk singers would emerge, state and federal troops would occupy the county more than half a dozen times, an indeterminate number of miners, deputies, and bosses would be killed, union membership would oscillate wildly, and workers in the nation's most anti-labor coal county would ultimately be represented by a union.
Document 12: Battle of Evarts: The Battle of Evarts is the name given to a mining strike and ensuing violence that occurred in Harlan County, Kentucky, in 1931. In February 1931 The Harlan County Coal Co. cut wages for its employees. The United Mine Workers union responded by holding a rally in Pineville, drawing over 2,000 attendees. This and other wage cuts and firings led to a strike, and on May 5 Sheriff Jim Daniels (who was reportedly on the payroll of the Black Mountain Coal Co.) and "three carloads of deputies armed with machine guns, sawed off shotguns and rifles drove into Evarts" to confront the striking miners. It is unclear who fired first, but after the battle Jim Daniels, two of his deputies and one miner had died. Eventually Gov. Flem D. Sampson called in the National Guard to stop the strike. It ended in June after several deaths and arrests.
Document 13: Battle of Blair Mountain: The Battle of Blair Mountain was the largest labor uprising in United States history and one of the largest, best-organized, and most well-armed uprisings since the American Civil War. For five days in late August and early September 1921, in Logan County, West Virginia, some 10,000 armed coal miners confronted 3,000 lawmen and strikebreakers, called the Logan Defenders, who were backed by coal mine operators during an attempt by the miners to unionize the southwestern West Virginia coalfields. The battle ended after approximately one million rounds were fired, and the United States Army intervened by presidential order.
Document 14: Chafin House: Chafin House, also known as Women's Club of Logan Library, is a historic home located at Logan, Logan County, West Virginia. The house was built about 1900, and is a two story, brick and frame dwelling a generous raised foundation of rock-faced ashlar. It has a cross-gabled roof with a gambrel front and large dormers on the sides. The house was deeded to the Women's Club of Logan in 1946, and has served as the local public library since then. It was the home of Sheriff Don Chafin, the infamous "Czar of Logan" and the leader of the defending forces in the Battle of Blair Mountain (1921).
Document 15: Don Chafin: Don Chafin (June 26, 1887 – August 9, 1954) was the sheriff of Logan County, West Virginia and a commander in the Battle of Blair Mountain. As sheriff of Logan County, Chafin was a fierce opponent of unionization and received hundreds of thousands of dollars from coal mine operators in return for his violent suppression of the United Mine Workers union.
ground_truth: 1921