A. Ordinary cuttings up to 1 m
B. Surface dressing up to 15 cm depths
C. Surface excavation up to 30 cm depths
D. Both B. and C.
Correct Answer: D. Both B. and C. ✔
Last Updated: January 20, 2019
A. Ordinary cuttings up to 1 m
B. Surface dressing up to 15 cm depths
C. Surface excavation up to 30 cm depths
D. Both B. and C.
Correct Answer: D. Both B. and C. ✔
Last Updated: January 20, 2019