August and Charles Ekburg (with a "u")operated a gold mine in La Plata Canyon, La Plata County, Colorado from about the turn of the 20th century, to about early WWII, when they moved to Durango, Colorado.
August's second wife was Signe Ekburg-? (no name on first wife, she died during the 1917? flu epidemic) His only daughter was from his first wife.
Charles' wife was Beda Ekburg-Johansen, a mail-order bride from Texas. She died in 1953?
August had one daughter Elvira Ekburg-Alexander and Charles had three off-spring, Evelyn Ekburg-Asher, Edwin Ekburg and Verner Ekburg; all now deceased.
To find more detail I would have to access the family archives... let me know what is needed.
Charlie