ANSWER: The government gave support to the Carnegie Steel Company to put a halt to the strike.
The Homestead strike (Homestead, Pennsylvania) was a result of the discontent of the American's strongest union at the time "Amalgamated Association of Iron and Steel Worker" toward the Carnegie Steel Company for breaching the contract signed in 1889, putting new productions demands and firing the workers of the plant.
On July 6, 1892, ten thousand people supporters of the union did a strike, in which the Company sent three hundred Pinkerton guards. The strike couldn't be repressed, it resulted in many ending up injured and the death of nine strikers and seven guards.
Henry Clay Frick, the manager of the Company, having no other option, appealed to Governor William Stone. Stone supported the company by sending eight thousand militia, which arrived on July 12.