http://www.dot.state.tx.us/ - Texas Department of Transportation. Organization that governs Texas transportation. Includes Title 43: The Texas Transportation Administrative Code.

http://www.tmta.com - Texas Motor Transportation Association. "Dedicated to enhancing the effectiveness of its members by advocating sound public policies, providing excellence in education, training and information, and promoting a safe, dependable and cost-effective motor transportation system to better serve the people of Texas." Earth Transport Co is a member of the TMTA.

http://www.osha.gov - Occupational Safety and Health Administration. U.S. Department of Labor. " The mission of OSHA is to save lives, prevent injuries and protect the health of America's workers."

http://wwwfhwa.dot.gov/ - Federal Highway Administration. U.S. Department of Transportation. Organization responsible for the Federal Motor Carrier Safety Regulations.

http://www.eeoc.gov - Equal Employment Opportunity Office. " ... to promote equal opportunity in employment by enforcing the federal civil rights employment laws through administrative and judicial actions, and education and technical assistance."

http://www.nida.nih.gov/ - National Institute of Drug Abuse. "NIDA supports over 85% of the world's research on the health aspect of drug abuse, ranging from the molecule to managed care, and from DNA to community outreach research."

http://www.agcoftexas.com/ - Associated General Contractors of Texas. The AGC of Texas is a statewide organization representing highway heavy contractors. Over 95% of the highways in Texas have been built by members of the organization. Earth Transport Co. is a member of the AGC.

http://www.ci.sat.tx.us/ - City of San Antonio, Texas.

http://www.ci.austin.tx.us/ - City of Austin, Texas.