Aerial Ft McMurray surface mining Oilsands Alberta Canada Spotmatik/Photodisc via Getty Images Note: All amounts discussed, except the prices in the covered call calculator screenshot, are in Canadian Dollars. On our last coverage of Canadian Natural Resources Limited (NYSE:CNQ), (TSX:CNQ:CA) we looked at how this free cash flow gusher was returning cash to shareholders and admired its aggressive buybacks and special dividends. While we liked the play we put our weight being the others and we literally ow ...