Abstracts Archive

In an underground ventilation system where there is a change in the moisture content of air, sigma heat is useful to identify and quantify the heat transfer processes. The literature on psychrometry suggests that the sigma heat is a function of barometric pressure and wet-bulb temperature. However,...

With the ever-increasing drive towards decarbonization, the case for mine refrigeration using geothermal means is gaining traction. Potential mines must however be located in both favorable geo-political jurisdictions and areas with adequate geological conditions. One such area is Sudbury, Ontario, ...

Deep mines often require cooling to comply with local heat stress regulations. Attempts to mitigate heat strain via improved heat indices are well documented. However, the impact of heat-stress index on refrigeration capacity is less explored. The paper examines the refrigeration capacity necessary ...

The Onaping Depth Project is a nickel/copper underground mine project currently in execution by Glencore's Sudbury Integrated Nickel Operations. The Onaping Depth orebodies will be accessed via the existing Craig Mine workings after completion of sinking a winze from 1,200 to 2,640m below surface. D...

As relatively hot mineral deposits are being developed to considerable depth, the issue of mitigating heat will require monumental cooling capacity in some cases. For deep deposits to be mined at increasing depths, mechanical cooling systems used to maintain an ac-ceptable underground climate will m...

Vale's Coleman mine has extracted minerals from 200-1,700 m depth for over 50 years and is currently expanding 1,850 m. At depth, autocompression effects superimposed on summer climatic conditions, generate increasingly adverse thermal working conditions with temperatures exceeding 40°C DB and 28°...