<classify> Ọ ga agafe ụsọ oke osimiri ọdịda anyanwụ nke northern Kalifonia ma mukekwaa ihu igwe site na Kalifonia gafee central Ọregọn rukwaa na Nevada na Idaho ruo nime Utah ka Tom Duxbury, onye bụ onye nlekọta ndị ọrụ ngo bụ Staadọst kwuru.  <topic>: sciencetechnology 