Golden Driller outside the Convention Center, Tulsa City, Oklahoma, United States of America, North America

Chestnut string with seeds of the common sweet buckeye (Aesculus flava) in front of basket with collected chestnuts on craft table with drill, hemp string and needle

Chestnut string with seeds of the common sweet buckeye (Aesculus flava) in front of basket with collected chestnuts on craft table with drill, hemp string and needle

Chestnut string with seeds of the common sweet buckeye (Aesculus flava) next to basket with collected chestnuts on craft table with scissors, drill and hemp string

Aerial view of the Development Driller III, which is drilling a relief well at the site of the Deepwater Horizon oil spill, is surrounded by oily water in the Gulf of Mexico, off the coast of Louisiana. the source of the growing oil spill in the Gulf of M

Aerial view of the Development Driller III, which is drilling a relief well at the site of the Deepwater Horizon oil spill, is surrounded by oily water in the Gulf of Mexico, off the coast of Louisiana. the source of the growing oil spill in the Gulf of M

Industrial workers

Worker climbing