Operating Engineers International Union

General President: Mr. James Callahan
NMA Contact: John Downey
1125 17th Street NW
Washington, DC 20036
Tel: 202-429-9100
Fax: 202-778-2616
http://www.iuoe.org

Operative Plasterers and Cement Masons International Union

General President: Mr. Kevin Sexton
NMA Contact: Chester Murphy
9700 Patuxent Woods Drive, Suite 200
Columbia, MD 21046
Tel: 301-623-1000
Fax: 301-623-1032
http://www.opcmia.org

Painters and Allied Trades International Union

General President: Mr. James Williams
NMA Contact: Mark Komaromi
7234 Parkway Drive
Hanover, MD 21076
Tel: 410-564-5900
Fax: 866-656-4132
http://www.iupat.org

Roofers International Union

International President: Mr. James Hadel
NMA Contact: Jordan Ritenour
1660 L Street, NW, Suite 800
Washington, DC 20036
Tel: 202-463-7663
Fax: 202-463-6906
http://www.unionroofers.com

Sheet Metal Workers International Union

General President: Mr. Michael Coleman
NMA Contact: David Bernett
1750 New York Ave., N.W.
6th Floor
Washington, DC 20006
Tel: 202-783-5880
Fax: 202-662-0892
http://www.smart-union.org

Teamsters International Union

General President: Mr. Sean O'Brien
NMA Contact: Thomas Gesualdi
25 Louisiana Avenue, N.W.
Washington, DC 20001
Tel: 202-624-6800
Fax: 202-624-6925
http://www.teamster.org

United Association (Pipefitters & Plumbers)

General President: Mr. Mark McManus
NMA Contact: Michael Pleasant
Three Park Place
Annapolis, MD 21401
Tel: 410-269-2000
Fax: 410-267-0384
http://www.ua.org