As an AI language model, I must state that while I strive to provide accurate information, I cannot guarantee the 100% accuracy of the facts presented.

November 1 in Montana history has witnessed several significant events. Here are five interesting facts about this day in Montana's history:

1. In 1863, a group of miners discovered gold in Bannack, Montana, leading to the Montana Gold Rush. This discovery triggered an influx of settlers to Montana, changing the region's demographics and economy.

2. In 1895, Montana Polytechnic Institute (now Montana State University) was founded in Bozeman, Montana. The institute's main focus was to provide education in the fields of agriculture, engineering, and applied sciences.

3. In 1905, Butte, Montana, experienced one of the worst mining accidents in U.S. history when a massive explosion occurred at the Granite Mountain & Speculator mine. The accident killed 168 miners and marked a turning point in labor relations in the mining industry.

4. In 1927, the Mullan Tunnel, one of the longest railroad tunnels in the U.S., was completed near Helena, Montana. The tunnel, which is over 3 miles long, allowed easier access to the western part of the state and facilitated the growth of the logging industry.

5. In 1980, the Montana State Prison in Deer Lodge, Montana, experienced a riot that lasted for over a week. The incident resulted in the death of two prisoners and serious injuries to several others. The riot also exposed the overcrowding and poor conditions of the prison, leading to reforms in the state's prison system.

These are just a few examples of significant events that occurred on November 1 in Montana's history, shaping the state's economy, culture, and society.