Toxic Mines is a mod for Civilization 6 that degrades food yields on and around tiles with polluting improvements. As your civilization industrializes, your improvements will start to produce more pollution and further affect food yields. Eventually, your citizens will start caring about their Cultural Heritage and make an effort to minimize the amount of pollution.

• Mines (after researching Apprenticeship).
• Quarries (after researching Banking).
• Oil wells and offshore oil rigs.

• Apprenticeship: Food yields on mines (except niter and salt mines) are reduced by 1.
• Industrialization: Food yields on mines (except niter and salt mines) and on tiles adjacent to mines are further reduced by 1 until Cultural Heritage is developed.
• Banking: Food yields on quarries are reduced by 1.
• Rocketry: Food yields on quarries are further reduced by 1 until Cultural Heritage is developed.
• Food yields on oil wells and offshore oil rigs are reduced by 1.
• Food yields on oil wells and offshore oil rigs, and on tiles adjacent to oil wells or offshore oil rigs are further reduced by 1 until Cultural Heritage is developed.

• Unimproved coal, oil, and uranium yield science instead of production.
• Iron, aluminum, coal, and uranium mines; and oil wells and offshore oil rigs, provide bonus production equal to their science yield.