3M made $32.8 billion in total sales in 2018, and ranked number 95 in the Fortune 500 list of the largest United States corporations by total revenue. As of 2018, the company had approximately 93,500 employees, and had operations in more than 70 countries.. In 2016, a complaint was filed against 3M for knowingly selling defective earplugs issued to military personnel deployed to Iraq and ...