Georgia v. Tennessee Copper Co.

Background

The State of Georgia sued two Tennessee copper‑smelting companies in an original action, saying their smelters sent sulphur fumes across the state line and killed plants. The Court decided the issues for Georgia in 1907, gave the companies time to build purifying works, and later allowed further evidence about changed conditions. The Ducktown company spent over $600,000 installing an acid plant, but Georgia argued fumes still damaged its vegetation.

Reasoning

The Court asked whether current operations still produced harmful sulphur fumes and whether improvements were proven to prevent damage. It found the Ducktown company had not fully proved continuous and adequate results from its changes and that averages in the record could hide short bursts of damaging emissions. Because the burden to show material change was on the company, the Court ordered specific steps to reduce the present probability of harm and to monitor results.

Real world impact

The Court required the Ducktown company to keep daily operational records, deposit funds for inspection costs, accept a court‑appointed inspector who will visit at least every two weeks for six months, and meet clear emission limits: no more than 45% of the ore’s sulphur may escape as fumes and daily sulphur emissions must not exceed 20 tons from April 10 to October 1 or 40 tons on other days. The case was kept open so either side can ask for further relief and a final decree must be submitted within ten days.

Dissents or concurrances

Justice Hughes, joined by the Chief Justice and Justice Holmes, dissented, saying the evidence did not justify the Court’s production limits.