This derrick suffered damage. Note the kink in the structure. Not safe to work under these condition. All sorts of accidents happen in the oil field, even when precautions are taken.

It's possible it's the aftermath of a blowout. Note the absence of hardware on walking beam and no lines coming down from the crown block. This would make a good companion of the set of jars in another page showing them stuck in the ground. It's been too many years to give you more details.