HARDGROVE GRINDABILITY INDEX OF COALbr In this tutorial I have explained about Hardgrove Grindability Index of Coal.What is Hardgrove Grindability Index, Procedure of measurement and formula of HGI.br Hello friends, I am Ashis, I am a Mechanical Engineer. Welcome to my channel A's Tech Talk. Please stay with me till end also LIKE, SHARE & SUBSCRIBE my channel.br 00:00 Introduction of this tutorialbr 00:27 Channel Introbr 00:37 Main topic startsbr 01:48 About HGI Testing Machinebr 02:10 Measurement procedure of HGI & Formulabr Thank you for watching, wish you all the best, stay tuned.