In terms of policy factors alone, the territory now ranks 55th out of 62 jurisdictions.
Wages in the mining-sector are more than 40 per cent higher than the average in all other sectors in the province.
The Canadian mining sector employs approximately 665,000 people.
The province's mineral deposits include potash, copper, zinc, lead and nickel.
Mines in the province employ more than 8,000 people.
The territory ranked among the world's top 10 most-attractive mining jurisdictions.
Seventy-five per cent of survey respondents said uncertainty around protected areas was a deterrent to investment.
More than one-third of respondents indicated that uncertainty around environmental regulations dissuaded investment in Ontario.