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.
Indigenous peoples of Mexico. Indigenous peoples of Mexico (Spanish: pueblos indÃ­genas de MÃ©xico), or Mexican Indians (Spanish: indios mexicanos) are those who are part of communities that trace their roots back to populations and communities that existed in what is now Mexico prior to the arrival of Europeans.