Stones in Civil Engineering part 2
![Muhammad Bilal](http://cdn.bitlanders.com/users/galleries/302596/302596_gallery_5409e217afad6_png_fa_thumb_medium.jpg)
Blasting Procedure Boring. Drilling of holes in rock using jumper, manual drilling or machine drilling using pneumatic or mechanical……
Blasting Procedure Boring. Drilling of holes in rock using jumper, manual drilling or machine drilling using pneumatic or mechanical……
Land pollution is a grave problem of today. It affects the quality of land. It is the deterioration of land due to human activities.……