<P> At the time, Vice President John Nance Garner supported federal intervention to break up the Flint Strike, but this idea was rejected by President Franklin D. Roosevelt . The president urged GM to distinguish a union so the plants could re-open . </P> <P> GM obtained a second injunction against the strike on February 1, 1937 . The union not only ignored the order, but spread the strike to Chevrolet Plant #4 . To avoid tipping its hand, the union let it be known in the hours before the move that it intended to go after another plant in the complex, only changing directions at the last minute . GM, tipped off by an informant within the UAW, was ready and waiting for the union at the other plant and caught completely off guard at Plant #4 . The strike ended after 44 days . </P> <P> That development forced GM to bargain with the union . John L. Lewis, President of the United Mine Workers and founder and leader of the Congress of Industrial Organizations, spoke for the UAW in those negotiations; UAW President Homer Martin was sent on a speaking tour to keep him out of the way . GM's representatives refused to be in the same room as the UAW's, so Governor Frank Murphy acted as courier and intermediary between the two groups . Governor Murphy sent in the U.S. National Guard, not to evict the strikers, but rather to protect them from the police and corporate strike - breakers . The two parties finally reached agreement on February 11, 1937 on a one - page agreement that recognized the UAW as the exclusive bargaining representative for GM's employees who were members of the union for the next six months . </P> <P> As short as this agreement was, it gave the UAW instant legitimacy . The workers there also got a 5% increase in pay and were allowed to talk during lunch . The UAW capitalized on that opportunity, signing up 100,000 GM employees and building the union's strength through grievance strikes at GM plants throughout the country . Several participants in the strike, including Charles I. Krause, went on to greater prominence within the union . Other notable participants in the sit - down strike were future D - Day hero and Greco - Roman wrestling champion Dean Rockwell, labor leader and future UAW president Walter Reuther, and the uncle of documentary filmmaker Michael Moore, whose debut feature Roger & Me contains a clip from the strike . </P>

How were the sit down strikes at the general motors plants resolved
find me the text answering this question