Although rarely documented and by nature hard to detect, corruption in the allocation/renegotiation of mining concessions is believed to be widespread. The secretive nature of such deals, the lack of transparency and public scrutiny as well as amount of capital involved provide opportunities for abuse and corruption. Civil society has been calling for greater transparency in the allocation and implementation of mining contracts and a number of tools and approaches have been developed in recent years to address the lack of transparency in the allocation of mining contracts. A few principles emerge from past experiences, including the need to ensure a truly competitive award of concessions, reduce opportunities for opportunistic renegotiations, promote transparency and full disclosure of contract information, create opportunities for participation as well as involve civil society in the negotiation and implementation process.