inquisitively; pryingly; nosily; thoroughly; persistently; through-and-through
to dig up; to turn up; to tear up; to rake up (e.g. old scandal); to dig over
(lucky) find; bargain; good buy; treasure trove
to dig through; to drill into; to excavate
digging for sweet potatoes (esp. as an outing); country bumpkin; yokel
to work out (a mine); to exhaust (vein of ore)