We have a company that sells products to mining companies. The mining companies we sell to extract commodities (gold, ore, etc.) from the ground. We have a database of industry people, some are current and some are potential customers. Our plan is to send a newsletter monthly or possibly twice per month. The newsletter needs to provide information on commodities, such as price trends and recent articles. We will have a short section where we present products we have for sale now and to solicit to buy products from them.