Government References:

CPSC Drywall Information Center
http://www.cpsc.gov/info/drywall/index.html

CPSC 51 Home Study
http://www.cpsc.gov/info/drywall/51homeStudy.pdf

FTC Consumer Alert - Defective Imported Drywall: Don't Get Nailed by Bogus Tests & Treatments
http://www.ftc.gov/bcp/edu/pubs/consumer/alerts/alt164.pdf

US District Court - Drywall Products Liability Litigation
http://www.laed.uscourts.gov/drywall/drywall.htm

FDH - Hazard Assessment… Associated with Imported Drywall
http://www.doh.state.fl.us/environment/community/indoor-air/drywall.html

HUD to Assist Homeowners Facing Problem Drywall
http://portal.hud.gov/portal/page/portal/HUD/press/press_releases_media_advisories/2009/HUDNo.09-237

CPSC & HUD Interim Remediation Guidance for Homes with Corrosion from Problem Drywall
http://www.cpsc.gov/info/drywall/guidance0410.pdf

US District Court - Chinese drywall markings: photographic examples
http://www.laed.uscourts.gov/Drywall/DrywallMarkings.htm

XRF Manufacturers:

Innov-X
http://innov-x.com/

Oxford Instruments
http://oxford-instruments.com

Niton
http://niton.com

Other Info:

Technical Symposium on Corrosive Imported Drywall
http://www.drywallsymposium.com/

Chinese drywall information page by attorney Allison Grant, Esq.
http://www.chinesedrywall.com/