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.
Mexicans (Spanish: Mexicanos) are the people of Mexico, a multiethnic country in North America, and those who identify with the Mexican cultural and/or national identity.hite Mexicans are Mexican citizens of full European descent. Although Mexico does not have a racial census, some international organizations believe that Mexican people of Spanish or predominantly European descent make up approximately one-sixth (16.5%) of the country's population.