Useful Links

http://www.bidnet.com/	Government bid opportunities
http://www.meanscostworks.com/	Cost works
http://www.bidclerk.com/	Construction Bid opportunities
http://www.thebluebook.com/	The Bluebook
http://www.osha.gov/	OSHA Protection
http://www.nyc.gov/html/dob/html/home/home.shtml	NYC Department of Building