Ranger produced 132,000 tonnes of uranium oxide over its lifetime.
Owner Cameco cited increased risk from pandemic for putting operation on care and maintenance.
A freeze wall design provides full hydraulic containment of the ISR well field.
Study highlights value in one of Denison's secondary projects
Grade Engineering helping the mine with preconcentration quandary.
ISR player aims to establish itself as a cleaner alternative to conventional mining.
Restart dependent on company being able to provide safe operating protocols.
The positive ISR modelling result enables further testing this year.
Pandemic still a concern in Saskatchewan province.
Ontario refinery and conversion plants suspended for four weeks.
Canadian mine had already been closed for three weeks
Initial stoppage will extend for four weeks amid COVID-19 concerns