Los Angeles Times, January 22, 2011 by Carol J. Williams
http://www.latimes.com/news/local/la-me-execution-drug-20110122,0,5035954.story
In California, the legal guidance for carrying out executions was amended in August after three years of debate and deliberation. The state’s new protocols specify use of sodium thiopental as the first drug in the three-injection sequence, and any substitution would require the state to again revise the protocols, said Elisabeth Semel.