Our US tungsten Investment Viking Mines (ASX: VKA | OTC: VKALF) just delivered its third metwork milestone in three months.

The combined gravity-plus-flotation circuit at VKA's Linka Tungsten Project in Nevada produced a 62.5% tungsten concentrate at 59.8% recovery from a 1.2% feed grade.

That is a considerable improvement on the 56.4% tungsten at 46.0% recovery result from the previous round of testwork in March.

So with effectively the same starting material, VKA has today seen a nice boost to the results.

Read the full article here: https://nextinvestors.com/quick-takes/vka-produces-625-tungsten-concentrates/