In Iron Silver Mining Company v. Elgin Mining & Smelting Company & Others, the Supreme Court of the United States was asked to decide whether a mining company had the right to mine a certain area of land. The Iron Silver Mining Company had been granted a patent for the land in question, but the Elgin Mining & Smelting Company had also been granted a patent for the same land. The Iron Silver Mining Company argued that their patent was superior to the Elgin Mining & Smelting Company's patent, and that they had the right to mine the land. The Supreme Court held that the Iron Silver Mining Company's patent was superior to the Elgin Mining & Smelting Company's patent, and that the Iron Silver Mining Company had the right to mine the land. The Court reasoned that the Iron Silver Mining Company's patent was granted first, and that the Elgin Mining & Smelting Company's patent was granted after the Iron Silver Mining Company's patent. The Court also held that the Elgin Mining & Smelting Company had no right to mine the land, as their patent was inferior to the Iron Silver Mining Company's patent.

Justice Field delivered the dissenting opinion in Iron Silver Mining Company v. Elgin Mining & Smelting Company & Others, arguing that the majority had erred in its interpretation of a mining law passed by Congress. He argued that under this law, miners were entitled to exclusive possession and control of their claims until they had been surveyed and patented by the government. The majority's decision allowed for other parties to interfere with these rights before patenting was complete, which Justice Field believed would lead to confusion and uncertainty among miners who relied on clear legal guidance when staking out their claims. Furthermore, he noted that such interference could potentially deprive some miners of their rightful property if another party preempted them from obtaining a patent due to prior occupation or use of the land. In conclusion, Justice Field argued that allowing others access to unpatented lands violated both Congressional intent as well as established principles governing mineral rights in public lands states like California where this case originated from.