$2)$ Describe the size $($e$.$g$.$ large, small, stringy, etc.$)$ and any uniqueness of the chips produce during the drilling of each coupon.

Coupon A:

Coupon B:

Coupon C:

Coupon D:

Coupon E:

$3)$ Describe, by comparison,the amount of pressure necessary to drill the different test coupons. Which took more pressure, which took less

pressure, and why?

Coupon A:

Coupon B:

Coupon C:

Coupon D:

Coupon E: