Lincolnton police rounded up at least three dozen suspects Thursday as part of a nine-month-long investigation aimed at the drug trade in Lincoln County.Lincolnton police Lt. Brian Greene said Operation Summertime Blues was a joint effort by the department's Special Enforcement Team and its Criminal Investigation/Narcotivs division. He said those arrested Thursday face more than 210 felony changes, ranging from trafficking, to possession with intent to sell or deliver.Some of those arrested face additional charges, such as breaking and entering and obtaining property by false pretenses.Greene said the crackdown came after a request from Chief H.D.