A comparative assessment of the physical and microstructural properties of waste garnet generated from automated and manual blasting process oleh Kabiru Rogo Usman, Mohd Rosli Hainin, Mohd Khairul Idham Mohd Satar, Muhammad Naqiuddin Mohd Warid, Aliyu Usman, Zaid Hazim Al-Saffar, Munder Abdullah Bilema