1) Tin Mining:
There is an IDH workgroup for Tin. It was founded in August of 2013. The 2013 impact report [1] from the IDH doesn't actually contain the word tin. Also the tin division has released no press releases or news other then its founding.
[1] http://www.idhsustainabletrade.com/impact
:.:.:
2) Supplier Responsibility.
The program has only existed for 8 years.
"Our Supplier Code of Conduct was already one of the toughest in the electronics industry, and we made it even stronger [...] We drove our suppliers to achieve an average of 95 percent compliance with our maximum 60-hour work week." (This program started in 2012, after the 2010 foxconn suicides).
18 out of 240 factories now have employee eduction programs. This represents ~270,000 out of the estimated 1.5 million workers (18%).
13 out of 240 factories now supply their workers with clean water (5%).
The IDH work group Apple Founded certified all Tin Smelters they source from are "conflict free".
Apple publicly states bonded (indentured labor) that goes on for a time longer then 30 days is a humans rights violation. But only ~16% of its indentured labor follows this guide line.
[1] https://www.apple.com/supplier-responsibility/pdf/Apple_SR_2...