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2003

Capanema, L. X. L., Ciminelli, V. S. T.

This work aimed at evaluating the acid rock drainage (ARD) potential of five samples of a Brazilian gold sulfide mine in a decommissioning process. Three of the most traditional ARD prediction techniques, Standard Acid Base Accounting (Std ABA), Modified Acid Base Accounting (Modified ABA), as...

2003

Mattson, B., Carreau, R.

The results of a detailed acid rock drainage (ARD) prediction program were used to revise the waste rock segregation criteria at the Restigouche open pit mine. Waste rock at the site was predominately derived from altered volcanic rocks that hosted a massive sulfide lead/zinc orebody. The program...

2003

Waters, J. C., Santomartino, S., Cramer, M., Murphy, N., Taylor, J. R.

Acid rock drainage (ARD) can have detrimental effects on mining infrastructure, water reuse options and environmental discharge. As a result, some form of short- or long-term treatment is required at many mine sites. Successful treatment depends on a number of factors including the selection of...

2008

Konhauser, K.O., Owttrim, G.W., Smith, D.S., Lalonde, S.V.

Significant efforts have been made to elucidate the chemical properties of bacterial surfaces for the purposes of refining surface complexation models that can account for their metal sorptive behavior under diverse conditions. However, the influence of culturing conditions on surface chemical...

2008

Owttrim, G.W., Lalonde, S.V., Smith, D.S., Konhauser, K.O.

Bacteria grow in complex solutions where the adsorption of aqueous species and nucleation of mineral phases on the cell surface may interfere with membrane-dependent homeostatic functions. While previous investigations have provided evidence that bacteria may alter their surface chemical...

2003

Hicks, S. A.

Transport Canada (Federal Government) constructed the Halifax International Airport (HIA) near Halifax, Nova Scotia, Canada in the late-1950s. Site location criteria were primarily; direct access to the city and a raised flat topography. Unfortunately, the site chosen was located on shallow...

2003-01-01

Day, S., Sexsmith, K., Millard, J.

BHP Billiton Diamonds Inc (BHPB) has been mining kimberlite from several pipes at the Ekati Diamond MineTM located 300 km north of Yellowknife since 1997. Processing of kimberlite produces coarse kimberlite rejects (CKR, 0.5 to 8 mm) and fine tailings (less than 0.5 mm). The CKR are trucked to...

2020-02-27

Congdon, Jenna V., Hahn, Allison H., Campbell, Kimberley A., Scully, Erin N., Yip, Daniel A., Bayne, Erin M., Sturdy, Christopher B.

Smaller owls and hawks are high-threat predators to small songbirds, like chickadees, in comparison to larger avian predators due to smaller raptors’ agility (Templeton et al. in Proc Natl Acad Sci 104:5479–5482, 2005). The current literature focuses only on high- and low-threat predators. We...

2019-02-12

García-Vega, Michelle, Tucker, Benjamin V.

Upper Necaxa Totonac is a Totonacan language spoken in the Necaxa River valley in the Sierra Norte of Puebla State, Mexico. While the Totonacan languages historically have three phonemic vowel qualities, the Upper Necaxa system consists of five vowels that contrast length and laryngealization....

1993

Stratton, G., Sorkin, L., Leech, R., Cady, A., Caldwell, M.

Abstract: The family Acroceridae (Insecta: Diptera; ''Small Headed Flies'') are a seldom seen yet cosmopolitan group of endoparasitoids of spiders. Recent host and distribution records are presented here for six species of acrocerids: Ogcodes borealis Cole, 1919; Ogcodes pallidipennis (Loew,...