Mining Geology Chapter-3 (Part-8)

Mining Geology Chapter-3 (Part-9)

Mining Geology Chapter-3 (Part-10)

Mining Geology Chapter-4 (Part-1)

Mining Geology Chapter-4 (Part-2)

Compass surveying (Part-1)

Compass surveying (Part-2)

METAL MINING CHAPTER-1 (Part-12)

METAL MINING CHAPTER-3 (Part-1)

METAL MINING CHAPTER-4 (Part-2)

METAL MINING CHAPTER-4 (Part-3)

METAL MINING CHAPTER-4 (Part-4)