In 1910, when he was 62, the Los Angeles Police Department hired Wyatt and former Los Angeles detective Arthur Moore King at $10.00 per day to carry out various tasks "outside the law" such as retrieving criminals from Mexico, which he did very capably. This led to Wyatt's final armed confrontation. In October 1910, he was asked by former Los Angeles Police Commissioner H. L. Lewis to head up a posse to protect surveyors of the American Trona Company who were attempting to wrest control of mining claims for vast deposits of potash on the edge of Searles Lake held in receivership by the foreclosed California Trona Company. Wyatt and the group he guarded were regarded as claim jumpers and were confronted by armed representatives of the other company. King wrote, "it was the nerviest thing he had ever seen". With guns pulled, Wyatt came out of his tent with a Winchester rifle, firing a round at the feet of Federal Receiver Stafford W. Austin. "Back off or I'll blow you apart, or my name is not Wyatt Earp". The owners summoned the U.S. marshal, who arrested Earp and 27 others, served them with a summons for contempt of court, and sent them home. Earp's actions did not resolve the dispute, which eventually escalated into the "Potash Wars" of the Mojave Desert.