Indonesia has approved another Tin Export Permit Investing News NetworkJul. 06, 2009 01:38PM PSTIndustrial Metals InvestingIndonesia has approved an export permit for a new tin smelter, bringing the total number of smelters allowed to 30. For full story, click hereIndonesia has approved an export permit for a new tin smelter, bringing the total number of smelters allowed to 30.For full story, click here