His funeral , held four days later , was attended by Bill Janklow .
Manke died of a heart attack on August 12 , 1985 , while traveling to Fall River Feedlot near Hot Springs , South Dakota .
Manke 's funeral , held four days later , was attended by Bill Janklow .
Manke died of a heart attack on August 12 , 1985 , while traveling to Fall River Feedlot near Hot Springs , South Dakota .