June 10 in Montana history is a significant date that is marked with several interesting events. Some of these events include the following:

1. In 1869, the first gold discovered in Montana was found on this date at a creek named Alder Gulch. This discovery led to a gold rush that attracted thousands of miners to Montana, leading to the creation of several mining towns.

2. In 1918, a devastating forest fire broke out in the Yaak Valley of Montana on this date, leading to the death of several people, including firefighters. It is considered one of the worst disasters in Montana's history.

3. In 1936, the first meeting of The Montana Stockgrowers Association took place on June 10 in Miles City, Montana. This association is considered the oldest livestock organization in the United States and has played a critical role in promoting the livestock industry in Montana.

4. In 1971, Montana's biggest oil spill occurred on June 10 when a tanker truck carrying 32,000 gallons of gasoline overturned, causing an explosion that led to the death of several people. This event led to the implementation of stricter safety regulations in Montana.

5. In 1995, the Montana State Legislature approved the Montana Stream Access Law, which ensures public access to Montana's surface waters for recreation and other purposes. This law has been considered a significant victory for public access advocates and outdoor enthusiasts in Montana.

In conclusion, June 10 in Montana history is an important date that marked several significant events in Montana's development and history. These events have shaped Montana's culture, economy, and environment and continue to have an impact on the state today.