Yet, this is hardly the focus of traders and investors. Source: April Investor Presentation Currently, the Canadian Revenue Agency (NASDAQ: CRA ) is trying to make Silver Wheaton pay more taxes for previous years as it relates to the income earned by the company's foreign subsidiaries. There are two separate audits occurring, one for the 2011-2013 tax years that began last July and one for the 2005-2010 years that began in late January. There is currently no timeline on when the CRA will complete its audit. The audit comes at an interesting time for Silver Wheaton. The company just completed an additional equity offering utilizing a bank syndicate. This offering was done to repay the $900 million credit line SLW took on after purchasing Glecore's ( OTCPK:GLCNF, OTCPK:GLNCY ) Antimina back in late 2015. Antimina accounts for the largest amount of production from any one mine for Silver Wheaton, producing 13.6 million ounces of silver last year, which is visible in the graph above.