Thyroid replacement hormones usually are well tolerated. Symptoms that occur during treatment are often due to toxic, elevated levels of thyroid hormones and resulting symptoms from hyperthyroidism.
Facts about the New Madrid Seismic Zone. The New Madrid Seismic Zone (NMSZ) is the most active seismic area in the United States east of the Rocky Mountains. The NMSZ is located in southeastern Missouri, northeastern Arkansas, western Tennessee, western Kentucky and southern Illinois.
Named after: Madrid, Spain County seat: New Madrid . In 1812 New Madrid was a vast county extending south through much of Arkansas. The area was cut roughly in half during the following year, and even further reductions came by 1816. New Madrid County, located by the Mississippi, was one of Missouris earliest counties. The town of New Madrid was founded in 1783, and the county was organized in 1812. First courts met in New Madrid, but county records previous to 1816 are missing. After the devastating earthquake of 1811 and repeated flooding of the Mississippi, the court chose an inland site for the county seat.