The available construction labor in the United States, about 6.7 million, will provide a large labor pool for the trades that are not unique to the power industry, such as iron and steel workers, pipe fitters, and electricians.
The unique workers required by the power industry such as iron and steel workers, pipe fitters and electricians are a specialised group.
mnli hypothesis: The unique workers required by the power industry such as iron and steel workers, pipe fitters and electricians are a specialised group. premise: The available construction labor in the United States, about 6.7 million, will provide a large labor pool for the trades that are not unique to the power industry, such as iron and steel workers, pipe fitters, and electricians.