VMS - CHART, page-260

I mean, I'm no expert. all I can say is refer to this announcement dating back to late 2019, at the time only 10% of the site's targets had been identified (so its still an early stage project), and Mt lindsay was, and somewhat still is, classified as an 'undeveloped site' by the TAS gov., although, the largest one in the world - 80kt+ of tin is big.

ASX announcement 12/12/2019 - Major EM Survey at Mount Lindsay Identifies
Priority Renison Style Tin Target

Considering, the Renison tin mine (Australia's largest tin deposit) is 680kt, and MLX is currently in production at that site, with an expected capacity of 98kt (10-12kt p.a) over the next ten years. But as a result they have huge production costs (and debt), worth having a look at their cash flow reports to get a picture of where VMS would be if they had pushed development of Mt Lindsay without any positive cash flow first.

So as I understand it (but i'm still studying the economics of it),developing and extracting tin is capital intensive comparative to other industrial metals, hence why VMS has strategically prioritised Riley, in order to self fund Mt Lindsay, which, i must say, shows some savvy management. In other words, the focus for the last 24months has been full development at Riley, in order to fund development at Mt Lindsay. And their current timeline to production is another 24 months. And I also see this as a strategic benefit, as all current predictions for global tin consumption are pointing to a decade of booming demand.

I'm sure there are some factors i'm not taking into consideration though, so happy to be corrected.