As companies look to save money in a tough marketplace, many are turning to projects with a history of mining combined with historical grades. That's especially true in the tungsten space. After a long period of dormancy due to a market crash, tungsten properties became available for relatively cheap. Now, with global demand for tungsten growing, companies are looking to make their fortune off of historical work. However, the fallout of the Bre-X mining scandal in the late 1990s radically changed the purpose and form of using historical grades in examining properties. The company had faked samples by salting them with outside gold, effectively ruining the power of unsubstantiated mineral estimate claims. The NI 43-101 report was created out of the rubble, and now Canadian companies use it to highlight documented and proven resources. Tungsten Investing News spoke with a few companies to see how they're balancing historical grades with the new reporting standards. The upside The upshot was that there is still intrinsic value in examining historical grades at projects. It gives junior mining companies a chance to take a deeper look at brownfield sites — so called due to work having already been done on them — without wasting money. "For us, as a junior company taking over a brownfield site that had been extensively explored by AMAX in the 1980s, it meant we drilled six holes instead of 160 holes," said Russell Clark, managing director of Wolf Minerals (ASX: WLF). Wolf Minerals operates the Hemerdon project in Southwest England on a site that has a history of tungsten mining dating back to 1897. It was mined during both world wars and was eventually discontinued due to the collapse in the tungsten market. Now it's on pace to achieve production in the third quarter of 2015.