Mining executives are concerned about the potential for new taxation in Nevada concerns that could affect their plans for future development in Nevada, says an executive of the Canadian nonprofit that conducted a recent survey. Nevada slipped to 10th place among jurisdictions worldwide that industry executives consider to be mining-friendly in a survey conducted in June by Fraser Institute of Vancouver. A survey by the market-oriented institute earlier this year placed the state third among 51 jurisdictions. The survey, which polled mining executives from 429 exploration and development companies, measures their assessment of mineral potential as well as companies' confidence …