jan is perfect for cutting staves,,if the staves are thick in a unheated building,probably never get dry enough,,,take some of them work them down to floor tiller stage seal them with shellac,,bring them in the house dry them down to 6 to 8 mc,, check them in 6 to 8 months,,better at least a year,,,, they can be dried quicker but the risk of checking is greater,