Strikes and lockouts History 80 Working class 18 Labor movement 17 Labor unions 13 Coal mining 11 Industrial relations 9 more ... Coal miners 8 Politics and government 8 Political activity 7 Teachers 7 Clothing trade 6 Economic conditions 6 Social conditions 6 Fire, 1911 5 Fires 5 Coal mines and mining 4 Collective bargaining 4 Labor disputes 4 Miners 4 Employees 3 Public schools 3 Sex discrimination against women 3 Social aspects 3 Strikebreakers 3 Teachers' unions 3 Women in the labor movement 3 African American soldiers 2 African Americans 2 Banana trade 2 less ...