Thingvalla/Gieser disaster

Hi, folks, I have been reading here on site about the Thingvalla/Gieser disaster.... Did they ever decide what or who was at fault? I read one fellow's story..Gieser's fault, someone else thought it was the Thingvalla's fault... I am curious because my husband's grandfather and 3 of his siblings came to America on board the Thingvalla. A sister left Norway on the Thingvalla on Sept 3, 1885. The other sister left on June 24, 1886. Grandpa, his wife, and his brother left June 10, 1887, bound for Michigan. There were also some cousins with them. all three groups left from Kristiansand, Norway. The men and Grandpa's wife, ended up in Minnesota. The ladies moved out west. Thanks for any info you can give me! Nancy T