REalloys (NASDAQ: ALOY) has signed an agreement that could give it priority access to up to 30% of production from a 2-billion-ton Appalachian rare earth resource network, expanding its growing pipeline of domestic and allied feedstock ahead of the Pentagon’s 2027 ban on Chinese-origin materials. The deal comes just two months after unveiling its buildout of the largest heavy rare earth metallization facility outside of China. Under a new Letter of Intent released on Wednesday with Patriot Exploration & Mining, REalloys would gain preferential…