Aims. The primary aim of this randomized, blinded, controlled clinical trial was to compare the percent root coverage obtained using acellular dermal matrix allograft and connective tissue graft using the coronally positioned tunnel technique 4...
Aims. The primary aim of this randomized, blinded, controlled clinical trial was to compare the percent root coverage obtained using a coronally positioned tunnel surgery plus an acellular dermal matrix allograft (ADM) with single tooth sling...
A man stands behind a pillar in the Eastern Parkway overpass tunnel that connects Brook Street and Floyd Street, taking a picture. A red car drives through the tunnel in the lane behind the man. Overhead, an inscription reads "CLEARANCE...
Aerial view of a tunnel through a mountain with train tracks leading to the entrance. Handwritten on bottom: Hoosac Tunnel East End. Text on left: Hoosac Tunnel Series. Text on right: North Adams & Vicinity. Descriptive information on back of...
Two sets of railroad tracks leading to a tunnel through a hill or tree-covered mountain. Rocks and wild plants are on the sides. A small building is on the right outside the tunnel. There is an electric or telephone pole in the distance on the...
Two sets of railroad tracks leading to a tunnel entrance through a mountain. Title: Hoosac Tunnel. East end of the Double Track. Text on left: Hoosac Tunnel Series. Text on right: North Adams & Vicinity.
Train tracks leading to an arched stone tunnel entrance through a large hill. A man stands on the tracks in the center of the entrance. A broken fence is on the right side of the tracks near the tunnel, with trees on either side of the tracks. A...
Four sets of railroad tracks leading to a tunnel through a hill or mountain with hills on either side. Two sets of tracks are straight while two sets meet the straight sets an angle. A small building is on the right outside the tunnel. Text on...
Four sets of railroad tracks leading to a tunnel through a hill or mountain with hills on either side. Two sets of tracks are straight while two sets meet the straight sets an angle. A small building is on the right outside the tunnel. Title: 433...
Built by the Lexington and Ohio Railroad Company in 1848, the tunnel allowed trains to travel directly into Frankfort, Kentucky. Railroad tracks lead into the tunnel, and the steep cliff of the adjacent mountain clearly illustrates the engineering...
Two women wearing long dresses, one with closed parasol, stand next to railroad tracks near a tunnel. Several people appear to be huddling under the tunnel. Title supplied by cataloger.
Railroad tunnels; Railroad tracks; Fences; Gatehouses; Trees
This view from inside a railroad tunnel, taken in winter, includes the walls of the tunnel, the single railroad track, a fence, a gatehouse, and bare trees on the hillside. Probably in Kentucky between Louisville and London. Title supplied by...
Arched tunnel supported by beams. A set of narrow tracks run along the ground with a cart in the distance. The tunnel is illuminated by lights set on the ground. Title supplied by cataloger.
Exposed brick tunnel sticking out of a dirt embankment with construction machinery at its opening. A portion of a house is visible at the top of the embankment. The tunnel leads to a construction site near Beargrass Creek in Germantown and the...
Multiple views of a large group of men in suits standing in the middle of a tunnel, illuminated by a light on the tunnel wall.Title supplied by cataloger.
Multiple views of a large tunnel under construction for carrying pipes. The tunnel is supported by wood beams with men working around the site.Title supplied by cataloger.
Construction; Maintenance & repair; Sewerage; Construction equipment; Sewers; Pipes (Conduits); Men; Construction workers
Multiple views of a man standing in the middle of large brick-paved tunnel illuminated by large lights. In one view, he sits on wood planks with other men in the tunnel.Title supplied by cataloger.
Multiple views of men working on site constructing a large tunnel. Some stand on wood ladders and platforms across the tunnel opening, which is supported by wood and rebar.Title supplied by cataloger.
Two sets of railroad tracks leading to a tunnel in the distance through a tree-covered mountain. A creek is on the right beyond a line of telephone or electric poles. There is a building in the distance on the right side of the mountain. Title:...
