US corporate giants have pledged a whopping 170 million US Dollars for disaster relief operations to help victims of Hurricane Harvey, one of the most destructive storms in US history that killed at least 47 people. <br/><br/>Texas officials said, more than 185,000 homes were damaged and 9,000 destroyed as 42,000 people remain in shelters amid overflowing rivers and reservoirs. Authorities continue to search for survivors and made helicopter rescues from rooftops.