To print this page, click here. To return to normal view, click here.
Printable version of http://www.potashcorp.com/sustainability/reports/2006/environment/solid_wastes/
Go button
Solid Wastes
My Shortcuts  What is this?
Add icon

Wastes Produced by Phosphate Division and Geismar

Phosphogypsum (gypsum) is a byproduct of phosphoric acid production, and White Springs, Geismar and Aurora have aboveground gypsum stacks. In a unique reclamation process, Aurora blends gypsum with clay, returning the blend directly to the mined-out areas and negating the need to build new gypsum stacks.

Wastes Produced by Potash Division

The predominant waste product of potash production is common salt tailings that are contained in managed aboveground storage areas. The exception is the New Brunswick operation, which, by taking advantage of its geology, returns nearly all solid waste to mined areas underground.

Wastes Produced by Nitrogen Division

Nitrogen operations produce no significant volumes of solid wastes.

Process Solid Wastes
(000s tonnes) 2002 2003 2004 2005 2006
Gypsum 6,438 9,312 10,154 10,549 10,727
Waste salt to storage 7,922 7,593 8,581 10,516 6,637
Clay waste (fine tailings) 684 639 812 896 647
Waste salt and clay to mine 1,418 1,659 1,820 1,639 1,710
Salt as brine injection well 1,541 3,085 3,580 3,608 3,941
Source: PotashCorp

Non-Process Wastes

Non-process wastes from PotashCorp facilities include paper, oil, batteries, spent catalysts, paint, printer cartridges, light bulbs and many other materials. More than half, by volume, is recycled. Disposal procedures are based on US or Canadian regulations.

Non-Process Wastes
(000s tonnes) 2002 2003 2004 2005 2006
Solid waste disposed of off-site 6.3 6.6 8.5 9.1 6.9
Solid waste disposed of on-site 821 826 825 1,046 718
Solid waste recycled 2.5 150 151 5 156
Hazardous waste disposal 0.179 0.319 0.438 0.798 0.274
Source: PotashCorp

Hazardous Wastes

Hazardous waste disposal in 2006 declined from prior levels and has fluctuated based on potash production rates.