How were new industrial unions different from the older trade unions?

Industrial unions organized workers industry wide including unskilled with skilled workers rather than following strict craft lines like traditional unions. Many of the new industrial unions arose in the 1930's with the Congress of Industrial Organizations (CIO).

Pittsburgh with its powerful work force of Steelworkers, Electrical Workers, Mine Workers and even Shipbuilders was one of the main centers of this development.

A trade union (British English) or labor union (American English) is an organization of more skilled workers that have banded together to achieve common goals such as better working conditions. The trade union, through its leadership, bargains with the employer on behalf of union members (rank and file members) and negotiates labour contracts (collective bargaining) with employers. This may include the negotiation of wages, work rules, complaint procedures, rules governing hiring, firing and promotion of workers, benefits, workplace safety and policies. The agreements negotiated by the union leaders are binding on the rank and file members and the employer and in some cases on other non-member workers.

Industrial unions organized workers industry wide including unskilled with skilled workers rather than following strict craft lines like traditional unions. Many of the new industrial unions arose in the 1930's with the Congress of Industrial Organizations (CIO). 

Pittsburgh with its powerful work force of Steelworkers, Electrical Workers, Mine Workers and even Shipbuilders was one of the main centers of this development. 

A trade union (British English) or labor union (American English) is an organization of more skilled workers that have banded together to achieve common goals such as better working conditions. The trade union, through its leadership, bargains with the employer on behalf of union members (rank and file members) and negotiates labour contracts (collective bargaining) with employers. This may include the negotiation of wages, work rules, complaint procedures, rules governing hiring, firing and promotion of workers, benefits, workplace safety and policies. The agreements negotiated by the union leaders are binding on the rank and file members and the employer and in some cases on other non-member workers.

Silver is the answer i thinkhope it helds