Reinforcements
They secured the rebar inside the hatch and set down layers of concrete so that the structure would hold when a person goes down. Safety comes first, they could not have anyone being harme it would definitely not be worth it.
Summer Stench
The unavoidable and stifling Arizona heat slowed down their progress. The team put up a tent to protect themselves and the things inside the hole. They also added a Sonotube cardboard structure to prevent damage to things while they continued to work.