how do the chemists clean up the oil spill?

Answer 1

Containment/Cleanup

Don gloves, eye protection, lab coat, etc.
Contain and absorb spill using absorbents appropriate for the material
Protect floor drains from contamination, by putting absorbents or barriers around them
Package and label waste. Include contaminated clothes, rags, equipment, etc.
Store temporarily in a fume hood is material is volatile