During production Tahera had a diamond marketing alliance with Tiffany & Co.

In 2007 the company reported financial losses due to operational difficulties, the high value of the Canadian dollar, high oil prices, and the short operating season of the Tibbitt-Contwoyto winter road in 2006.

In mid-January 2008, Tahera filed an application for protection from creditors, and in February it suspended its mining operations.

In September 2008, a private Vancouver-based company announced a Plan Sponsorship Agreement with Tahera; however, in November Tahera announced that the Plan Sponsor's conditions were not met and the agreement fell through.

The company obtained court approval for the process of selling the Jericho Diamond Mine and other assets on 15 January 2010, and consequently opened a sales website.