Steven William Hart, 74, died Friday, April 5, 2019. Memorial Mass of Christian Burial will be 10:30 a.m., Wednesday, April 10, 2019 at the Church of St. Mary in Sioux Falls. Visitation will begin at 6 p.m. Tuesday, with family present from 6 until 7 p.m. at George Boom Funeral Home & On-Site Crematory, Sioux Falls. A Liturgical Wake Service will follow the visitation at 7 p.m. at the funeral home. Interment will take place at 2:30 p.m., Wednesday, April 10, 2019 at St. Thomas Cemetery in Madison, SD.