Where did miners mainly move from during the westward expansion?

During the westward expansion, miners primarily moved from the eastern United States, particularly from states like New York, Pennsylvania, and Ohio. Many were also drawn by the promise of riches from places like California during the Gold Rush of 1849. Additionally, some miners came from foreign countries, including China and Mexico, seeking better opportunities in the burgeoning mining camps of the West. This migration significantly contributed to the economic and demographic changes in the region.