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.
The Aztecs were a Mesoamerican people of central Mexico in the 14th, 15th and 16th century. They were a civilization with a rich mythology and cultural heritage. Their capital was Tenochtitlan on the shore of Lake Texcoco â the site of modern-day Mexico City. In Nahuatl, the native language of the Aztecs, Aztec means someone who comes from AztlÃ¡n, a mythical place in northern Mexico. However, the Aztec referred to themselves as Mexica or Tenochca.