It is a seller (CUU) right of first offer. In my experience, not common to see a seller ROFO (i.e. where the seller is the one offering to sell at a certain price), typically the ROFO is the buyer's option (once triggered by a seller that a process is under way). As others have mentioned, it really doesn't matter what the terms of the agreement say if both sides want to get a deal done at a price that works for both of them.

Directly from JV Agreement:

23.3 Right of First Offer. Copper Fox will, prior to selling or disposing of all or any portion of its Interest, first offer to sell the Interest to Teck for cash consideration and upon such other terms and conditions as Copper Fox deems fit. Copper Fox may not transfer, convey, assign, mortgage or grant an option of an Interest unless a proportionate Interest in the Direct Interest, Indirect Interest, Property, Assets and any Mine and this Agreement are to be transferred, conveyed, assigned, mortgaged or optioned together. Teck shall be entitled to elect, upon notice to Copper Fox, within 60 days of its offer, to purchase the Interest to be disposed of for price and on the terms set out in Copper Fox’s offer, in which case the closing of the sale and purchase shall take place at a mutually agreeable time and place within 60 days of Teck's election to purchase. If, within 60 days of Copper Fox’s offer to sell, Teck elects not to purchase the Interest for the price upon those terms and conditions Copper Fox will be free to dispose of that Interest to a third party at any time within six months of the expiry of the time for Teck to make an election but only for a cash consideration equal to or greater than the cash consideration stated in Copper Fox's offer to sell to Teck, and upon no more favourable terms and conditions as the offer to sell to Teck, provided, however, that the sale of the Interest to the third party shall be subject to the third party entering into an agreement with Teck whereby it agrees to be bound by the provisions of this Agreement (including, but not limited to, the restrictions on alienation that Copper Fox is subject to). Any Interest not disposed of by Teck as aforesaid will remain subject to the provisions of this subsection.