5.    Restricted Cash

The Company’s restricted cash consists of the following:

The bonding requirements for reclamation obligations on various properties have been agreed to by the Wyoming Department of Environmental Quality (“WDEQ”), the Bureau of Land Management (“BLM”) and the Nuclear Regulatory Commission (“NRC”) as applicable.  The restricted money market accounts are pledged as collateral against performance surety bonds which are used to secure the potential costs of reclamation related to those properties. Surety bonds providing $27.1 million of coverage towards specific reclamation obligations are collateralized by $7.4 million of the restricted cash at June 30, 2018.