Steel and elastomer assembly that has a central through-passage equal to or greater in diameter than the riser bore and that may be positioned in the riser string to reduce local bending stresses.
The Mazatec people are an indigenous people who inhabit an area known as the Sierra Mazateca in the state of Oaxaca in southern Mexico, as well as some communities in the adjacent states of Puebla and Veracruz.
From the 10th to the 16th centuries, many nomadic tribes hunted game in Jaliscoâs central valley. The Cuyuteco Indians lived near the present-day towns of CuyutlÃ¡n and MixtlÃ¡n, and the Coca occupied the vicinity of Guadalajara. The region extending from Guadalajara northeast to Lagos de Moreno was home to the Tecuexes.