70 Billions Lost In Bad Mining Contracts, Tanzania Suffers

The local residents from the area however dispute this and attribute 
the toxic spill to sheer 'negligence' on the part of the Gold Mining 
Company and government's failure to put large scale Mining Companies 
under close scrutiny. The Mining Contracts signed under dubious 
circumstances, involving corrupt government officials, contain claw 
back provisions that have tacitly compelled the Government to keep a 
'hands off' stance from the Mining Companies and thus allowed them to 
reap the mining resources with minimal interference and less regard 
for the economic and environmental impacts accruing from mining 
activities in the Country. 
http://groups.google.com/group/wanabidii/browse_thread/thread/cf3f9508c484ebdd?pli=1