Roger Duane Holst

Roger Duane Holst, age 83, formerly of Midland, Texas, passed away Wednesday, November 24, 2010, at Silver Stone Home, Denton, Texas.

He was born on July 23, 1927, in Vale, S.D., to Ernest and Dora (Trigg) Holst.

He married M. Alma (Rose) Holst on June 21, 1951, in Rapid City.

Roger was a veteran of World War II and was enlisted from 1945 to 1946. He was sent from Los Angeles via Hawaii to China where he relieved other Marines who were returning home after the war.

Roger attended Vale High School and graduated in 1945. Later he took advantage of the G.I. Bill in order to attend South Dakota School of Mines and Technology, 1949-1954 in Rapid City.

Roger worked in oil exploration as a seismologist and retired from Dawson Geophysical of Midland, Texas. His first job was in Rock Springs, Wyo. He was trained to be a human computer and then later was trained to use the computer technology in his work. As a seismologist, he used the earthquake technology of explosions and recording the vibrations to help discover the possibility of petroleum in deep rock formations.

His profession allowed him and his family to live in a variety of areas, which extended from Alberta, Canada, throughout the Rocky Mountain states and into Texas. A highlight of his career was to present a paper, Computers: 3D Seismographic Records, at a Washington, D.C. petroleum and technology conference in 1985.

Thankful to have shared his life are his wife, M. Alma (Rose) Holst; and his four children, Diana Reaves and her husband, Bernard (Jack) of Aubrey, Texas, Duane Holst of Midland, Texas, Debra Holst of Dallas, Texas, and Dawne Holst Adamson of Roseville, Calif.; four grandchildren, Troy Reaves of Flower Mound, Texas, Denise Chambers of Denton, Texas, Michael Gratzinger of Bluffdale, Utah, and Michelle Ross of Washington, D.C.; and five great-grandchildren, Ashley Reaves, Heather Reaves, Mia Hehmke, Rhys Chambers and Beckam Gratzinger.

Roger is survived by four siblings, Kenneth Holst of Sturgis; Alvin Holst of Vale, Allen Holst of Vale, and Judith Ollila of Vale.

Roger was preceded in death by two grandsons, B.J. Reaves III and Bryon Eric Reaves.

There will be a memorial service at The Church of Jesus Christ of Latter-Day Saints Chapel at 4805 Gateway in Midland, Texas, on Saturday, December 11, to celebrate his life.

There will be a gravesite ceremony May, 2011 at the Rose Cemetery, at Pedro, S.D.

An online guestbook is available at www.rushfuneralhome.com