What was the biggest problem miners faced?

A. fights with ranchers over who owned land

B. illness and injury from poor working conditions

C. inability to afford land given by the government

D. constant attacks from American Indians

B. illness and injury from poor working conditions.

Explanation:

This was the biggest problem that miners faced due to their occupation. Miners worked very hard at an extremely difficult job. They often suffered from illness and injury related to this. Some of these negative consequences were inevitable (such as the constant dust and darkness), but most of them resulted from poor working conditions, which placed them in an unsafe environment.

Answer:B

Explanation:

They work in mining and inhaling dust and getting them sick