GOLDEN, Colo. — It has been a little over a month since Coloradans approved a groundbreaking law legalizing small amounts of marijuana for recreational use.

Now that the celebratory haze has settled, state officials and marijuana advocates on Monday began sifting through the thorny regulatory questions that go beyond merely lighting up.

Among them: Who can sell marijuana? How should consumer safety be accounted for? How might employers and employees be affected by the new law?

At a packed meeting at a state building in this suburb west of Denver, a task force convened by Gov. John W. Hickenlooper began wrestling with some of these questions in an effort to forge a framework for how the law should work.