These stocks are behemoths in their respective industries and among the safest stocks you can hold for not only years, but decades.If you want to invest in the stock market but don't know where to get started, focus on finding some pillars that you can rely on for steady, long-term growth. These are the types of investments that won't expose you to much risk and can be safely held for years. Three stocks that can offer a good balance of growth and safety for investors to build their portfolios around are Mi ...