Strong quarterly results offer investors reason to hope the worst is over for the industrial conglomerate.Long-suffering 3M (MMM 4.56%) shareholders must have been pleasantly surprised by its first-quarter results Tuesday morning, and the stock is moving higher as a result. Shares of 3M were trading up by 5% as of 10:30 a.m. ET after its numbers easily beat expectations.A return to organic growthThe industrial conglomerate has lost more than 40% of its value over the past three years as it worked through a ...