Diagnostic medical sonographers must complete 24 continuing education credits every two years to remain certified. To maintain ARDMS credentials, sonographers must earn at least 30 continuing medical education (CME) credits in a 3-year period and pay an annual renewal fee.nly a few states require sonographers to be licensed. While state requirements can vary, a professional certification from a national credentialing organization is often required to become licensed.
[ edit intro ]. The Allegheny Portage Railroad was the section of the Pennsylvania Main Line of Public Works that traversed the Allegheny Mountains in Pennsylvania. It consisted of alternating level and inclined plane stretches of rail, pulling canal boats on carriages.
Great Northern Railway Mansfield Branch Line (1909-1985) and the Waterville Railway Co. (1910-1954) Built by the Great Northern Railway in 1909, the 61 mile Mansfield line branched off the mainline at the Columbia River and snaked its way up across Douglas County, WA to its terminus in Mansfield. In 1970, Burlington Northern took over operations of the line. In 1985 it was abandoned, thus closing the book on railroading on the Waterville Plateau. This blog is dedicated to preserving the history of the Mansfield Branch Line as well as the Waterville Railway Co. And some HO scale stuff.