49408
The Ironworker Management Progressive Action Cooperative Trust ( IMPACT ) is a joint , labor-management , non-profit trust formed under Section 302 ( c ) ( 9 ) of Labor-Management Relations ( Taft-Hartley ) Act which includes contributing Local Unions of the International Association of Bridge , Structural , Ornamental and Reinforcing Iron Workers and their signatory contractors .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None