NB Logo for Mining and Stone Crusher Company

Hi, Guys, this is my 1st submission on Dribbble.
This project was my favorite one, I did this project for a mining and stone crusher in Solok West Sumatera, Indonesia. The manager asked me for new brand and give me some brief about the company and i make the flow in mind mapping and pick some elements on it and make the rough sketch on paper, and then the smooth sketch like this. You can also see my final project on My Behance : https://www.behance.net/artmumu_design