context: July 11, 1989 in Mezhdurechensk (Kuzbass), a strike of miners of all coal-mining enterprises of the city began. The miners went to the central square and, having elected a strike committee, began a round-the-clock rally. Negotiations began with the Minister of Coal Industry of the USSR. After several days, the strike was supported by most coal enterprises in Kuzbass. On July 17, 1989, the Kemerovo Regional Strike Committee was formed by miners. The Commission of the Central Committee of the CPSU, the Government of the USSR and the All-Union Central Council of Trade Unions was forced to sit at the negotiating table with this committee.
question: When did the miners' strike of all coal mining enterprises in the city begin in Mezhdurechensk?
answers.text: July 11, 1989