What is the relationship between Athabasca Basin and uranium in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Skyharbour holds interest in an extensive portfolio of uranium and thorium exploration projects in Canada's Athabasca Basin and is well positioned to benefit from improving uranium market fundamentals with four drill-ready projects.

Answer: product_or_material_produced