When the Texas and New Orleans and Angelina and Neches River railroads were built around the turn of the century, other new towns sprang into life, including Garrison and Appleby. The construction of the railroads also spurred the development of the lumber industry, which emerged at the end of the nineteenth century as one of Nacogdoches County's most important industries.
Echo technicians are ultrasound technicians who have specialized in using echocardiogram technology to produce images of patient's hearts. This field requires an associate's degree in medical sonography, and further specialization within the field is possible.
Radiology techs are also known as radiographers or radiologic technicians, or more commonly by the type of technology they handle, such as X-ray technician or magnetic resonance imaging (MRI) techs. They help doctors look into the human body without the use of sonograms or sound imaging equipment.