Silverado mined, produced and sold antimony in many years past from Eagle Creek, which was the state's second largest antimony producer. Also pretty sure they had plenty of antimony samples from Nolan in 2008, at least from core samples.
Are you inferring the antimony samples at the Calgary show were mis-represented and came from outside Silverado properties? Context is very important, we all would appreciate everyone stating proper context and refrain from open-ended inferrences.