A rare earth element (REE) or rare earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.are earth elements became known to the world with the discovery of the black mineral Ytterbite (renamed to Gadolinite in 1800) by Lieutenant Carl Axel Arrhenius in 1787, at a quarry in the village of Ytterby, Sweden.
Boaz is a city in Etowah and Marshall Counties in the State of Alabama. It is part of the ' Gadsden, Alabama Metropolitan Statistical Area '. As of the 2010 census, the population of the city is 9,551.
Court: Boaz City-Court (101 Line Avenue). Marshall County has a predicted average indoor radon screening level between 2 and 4 pCi/L (pico curies per liter) - Moderate Potential. Air pollution and air quality trends. Air Quality Index (AQI) level in 2012 was 48.6.