Brothers Leonard and the late Reino Loukonen represent the third generation of the Loukonen Bros. Stone Co. in Lyons. Founded in 1890, it is one of the oldest businesses in Boulder County. Loukonen Bros. Stone Co. has furnished stone to many businesses, including the Boulder municipal building, the University of Colorado, Interlocken Business Park, Coors field and DIA.

It has attracted workers from as far away as Mexico, Sweden, Denmark and the brothers’ native Finland.

As well as operating the family quarry, the brothers have helped other stone quarries get started, including the Vasquez, Tribble and Spragues quarries.

The Loukonens have donated stone to schools, churches, parks and the Lyons Museum. In 1995, Leonard was honored as Lyons’ “Mr. Good Old Days.”