The TUEL itself changed for brief period into the dual union that the AFL had accused it of being.

These new dual unions were, in fact, often more like ginger groups than unions, with few members and even fewer long-term members.

Ultimately, however, the domination of the SLP by the personality of Daniel DeLeon and the organization's insistence on establishing dual unions weighed against it.

Had he played for the Ireland team, he would have become the first Irish dual cricket/rugby union international since Raymond Hunter in the 1960s.

In mid-1907, a group of dissident teamsters, the United Teamsters of America, had formed as a dual union and was seeking to organize members.

Hillman declared the TUEL formation to be a dual union and suspended its leaders, including Benjamin Gitlow.

William Z. Foster, the Communist leader, opposed dual unions in favor of organizing within the UMWA.

Meany denounced the ALA as a dual union, although Reuther argued it was not.

From 1968 to 1971 DRUM and the league acted as a dual union, with black leadership, within the United Auto Workers.

In tribal societies, the dual exogamy union lasted for many generations, ultimately uniting the groups initially unrelated by blood or language into a single tribe or nation.