In its April 10th, 2012 News Release, Puma announced that it had completed the 6 km length of line cutting at Nicholas-Denys between the Shaft Lens and the Great Northern Lens, and that a magnetic ground survey would soon be completed.
An ideal method for mapping geological structure, Em Surveys are relatively inexpensive and unobtrusive, compared to brute force excavating and drilling.

An EM survey employs an instrument that is basically an ultra-sensitive metal detector for obtaining sub-surface geophysical data. Puma Exploration employs the InfiniTEM® geophysical method; a technology so sensitive that conductive deposits can be detected through the overburden and as far below surface as 1000 metres. The results are then processed, interpreted and mapped thus:

As we await results from Puma's latest survey work, here is a map from a 3.5 km-long EM survey which Puma completed in 2010. The pink and red zones show the areas of most intense mineralization:
To view the above map in greater detail, click on it or go to: http://www.explorationpuma.com/html/en/proprietes/projet.php?pro_id=1

EM surveys are essential not only in geological mapping for exploration, but also for environmental projects, i.e. locating and mapping utilities, buried waste containers, clearance of boreholes, and locating abandoned oil and water wells. The same methods are used in construction and engineering projects, and are indispensable to archaeologists and forensic scientists.
Puma's current survey will be useful in identifying new surface mineralization as well as the tranverse faults and structures which play a major role in the gold and silver enrichments at Nicholas-Denys.