Gombe State University (GSU) is set to honour Abdullahi Usman (popularly known as Engineer Hadi) during its combined convocation ceremony. Usman is a 71-year-old self-taught engineer who has built a helicopter, water powered stove, among several other inventions. Other prominent personalities to be honoured include the Vice President Kashim Shettima; former Secretary to Government of the Federation, Barrister Boss Mustapha; …