If you are looking at recent performance, Agnico Eagle Mines Ltd ( TSX: AEM )( NYSE: AEM ) may not seem like a good investment on the surface. The company's stock has dropped as much as 12% in the last 30 days following the release of its second quarter earnings report, which missed analysts' estimates on revenue and earnings per share. However, for investors looking for a stock with long-term value, the details in the earnings report show how the recent price drop could have created an opportunity to buy a great miner at a lower cost. Year-to-date performance still strong Even with the latest stock correction, Agnico Eagle has gained approximately 28% this year, and this rally is well deserved. Sure, the latest results were a miss, but the miss is not enough evidence to write the company off. If Agnico Eagle reported declining revenue and earnings multiple quarters in a row, then it might be worth questioning the company's management and strategy.