Most of the effort so far is a battle of paperwork trying to hand off responsibility and covering your own behind.
Another regulation with good intentions, vaguely worded and broadly applied results in massive red tape for companies that have no control over the use/source of these materials.
Unless you employ significant penalties for anyone using conflict minerals, they will continue to be moved about and sold.
If you have inspectors who show up and take samples at random, you can begin to identify and police the people who "don't" care.
Just a thought.
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.