John "Jack" Keller passed away at his home in Casper, Wyoming on January 2, 2018. Jack was born on October 7, 1951 to Michael and Marlene Keller. He was raised and lived most of his life in Casper. He graduated from NCHS and worked 40 years for Northern Utilities, Kansas Nebraska, Kinder Morgan and Tallgrass Energy. He retired in 2014. Jack married to Katheryn Cantleberry in 1970 and they later divorced. He Married Kristi Kienzle in 1977 and they celebrated 40 years together this past May. Jack enjoyed riding ATV's, leatherwork and tinkering around in his garage. He was a PSIA certified ski instructor and taught at Hogadon in the 1980's. Jack is survived by his parents, Michael Keller of Boise, Idaho and Marlene Miller of Springfield, Oregon. Wife Kristi of Casper. Sons John (Leslie) of Crown Point, Indiana, Justin (Zulima) of Bar Nunn Wyoming and Seth Keller of Casper. He is also survived by his grandchildren Alliyah, Trevor, Sidney, Jackson and Elleanor. Brothers, Michael (Diane) of San Jose California; Craig of Casper and Richard (LeaAnn) of Boise, Idaho. No services are planned at this time.