GA3420 ***********************************************************************
GA3420  CBN         -  This is a Cooperative Base Network Control Station.
GA3420  DESIGNATION -  HIGH KNOB 2
GA3420  PID         -  GA3420
GA3420  STATE/COUNTY-  VA/WISE
GA3420  USGS QUAD   -  NORTON (1981)
GA3420
GA3420                         *CURRENT SURVEY CONTROL
GA3420  ___________________________________________________________________
GA3420* NAD 83(1993)-  36 53 34.20383(N)    082 37 45.89637(W)     ADJUSTED
GA3420* NAVD 88     -      1286.4    (meters)    4220.     (feet)  GPS OBS
GA3420  ___________________________________________________________________
GA3420  X           -     655,305.924 (meters)                     COMP
GA3420  Y           -  -5,065,938.018 (meters)                     COMP
GA3420  Z           -   3,808,642.243 (meters)                     COMP
GA3420  LAPLACE CORR-           0.99  (seconds)                    DEFLEC99
GA3420  ELLIP HEIGHT-        1255.74  (meters)                     GPS OBS
GA3420  GEOID HEIGHT-         -30.62  (meters)                     GEOID99
GA3420
GA3420  HORZ ORDER  -  B
GA3420  ELLP ORDER  -  FOURTH    CLASS I
GA3420
GA3420.The horizontal coordinates were established by GPS observations
GA3420.and adjusted by the National Geodetic Survey in June 1994.
GA3420
GA3420.The orthometric height was determined by GPS observations and a
GA3420.high-resolution geoid model.
GA3420
GA3420.The X, Y, and Z were computed from the position and the ellipsoidal ht.
GA3420
GA3420.The Laplace correction was computed from DEFLEC99 derived deflections.
GA3420
GA3420.The ellipsoidal height was determined by GPS observations
GA3420.and is referenced to NAD 83.
GA3420
GA3420.The geoid height was determined by GEOID99.
GA3420
GA3420;                    North         East     Units   Scale      Converg.
GA3420;SPC VA S     - 1,070,139.157 3,132,043.522   MT  0.99997950 -2 30 22.5
GA3420;UTM  17      - 4,084,223.786   354,812.276   MT  0.99985969 -0 58 42.0
GA3420
GA3420:                Primary Azimuth Mark                     Grid Az
GA3420:SPC VA S     -  HIGH KNOB 2 AZ MK RESET                  288 29 35.7
GA3420:UTM  17      -  HIGH KNOB 2 AZ MK RESET                  286 57 55.2
GA3420
GA3420|---------------------------------------------------------------------|
GA3420| PID    Reference Object                     Distance      Geod. Az  |
GA3420|                                                           dddmmss.s |
GA3420| GA3417 WISE RADIO STATION WNVA MAST        APPROX. 8.9 KM 0242958.1 |
GA3420|        HIGH KNOB 2 RM 3 AZIMUTH                           0412830.1 |
GA3420| GA3415 NORTON HIGH KNOB RADAR REPEATR      APPROX. 0.8 KM 0502326.0 |
GA3420|        HIGH KNOB 2 RM 4                     13.250 METERS 17423     |
GA3420|        HIGH KNOB 2 RM 1                     42.700 METERS 20158     |
GA3420|        HIGH KNOB 2 RM 2                     20.630 METERS 22408     |
GA3420| GA3421 HIGH KNOB 3                           9.800 METERS 28559     |
GA3420|        HIGH KNOB 2 AZ MK RESET                            2855913.2 |
GA3420|---------------------------------------------------------------------|
GA3420
GA3420                          SUPERSEDED SURVEY CONTROL
GA3420
GA3420  NAD 83(1993)-  36 53 34.20515(N)    082 37 45.89952(W) AD(       ) B
GA3420  ELLIP HT    -        1255.68  (m)                      GP(       ) 4 1
GA3420  NAD 83(1986)-  36 53 34.21197(N)    082 37 45.90466(W) AD(       ) 1
GA3420  NAD 27      -  36 53 33.85620(N)    082 37 46.33384(W) AD(       ) 1
GA3420  NGVD 29     -      1286.49   (m)         4220.8    (f) LEVELING    3
GA3420
GA3420.Superseded values are not recommended for survey control.
GA3420.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
GA3420.See file dsdata.txt to determine how the superseded data were derived.
GA3420
GA3420_MARKER: DS = TRIANGULATION STATION DISK
GA3420_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
GA3420_STAMPING: HOGH KNOB 2 1933
GA3420_MAGNETIC: N = NO MAGNETIC MATERIAL
GA3420_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
GA3420+STABILITY: SURFACE MOTION
GA3420_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
GA3420+SATELLITE: SATELLITE OBSERVATIONS - July 19, 1993
GA3420
GA3420  HISTORY     - Date     Condition        Recov. By
GA3420  HISTORY     - 1933     MONUMENTED       CGS
GA3420  HISTORY     - 1933     GOOD             CGS
GA3420  HISTORY     - 1960     GOOD             VADH
GA3420  HISTORY     - 1963     GOOD             CGS
GA3420  HISTORY     - 1963     GOOD             CGS
GA3420  HISTORY     - 1964     GOOD             CGS
GA3420  HISTORY     - 1969     GOOD             CGS
GA3420  HISTORY     - 19930719 GOOD             NGS
GA3420
GA3420                          STATION DESCRIPTION
GA3420
GA3420''DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (MAH)
GA3420''STATION IS ON THE SUMMIT OF A BARE-TOPPED KNOB, ABOUT 3
GA3420''MILES SW OF NORTON, VA.  STATION IS LOCATED ON THE E EDGE
GA3420''OF THE SUMMIT, 13 FEET NE OF THE NE CORNER OF A LOG CABIN.
GA3420''THERE WAS AN OLD U.S.G.S. STATION ON THIS POINT, BUT IT HAD
GA3420''BEEN DUG OUT AND ROLLED DOWN THE HILL.  STATION HIGH KNOB 2
GA3420''IS LOCATED NEAR THE SITE OF THE OLD U.S.G.S. STATION, AND THE
GA3420''REFERENCE MARKS WERE SET IN THE DRILL HOLES OF THE OLD
GA3420''REFERENCES.
GA3420''
GA3420''SURFACE AND UNDERGROUND MARKS ARE STANDARD BRONZE DISKS SET
GA3420''IN CONCRETE, AS DESCRIBED.
GA3420''
GA3420''REFERENCE MARKS ARE STANDARD DISK REFERENCE MARKS WEDGED
GA3420''IN DRILL HOLES IN BOULDERS.
GA3420''
GA3420''REFERENCE MARK NO. 1 IS LOCATED AT THE SOUTHERN EXTREMITY
GA3420''OF THE BARE TOP.
GA3420''
GA3420''REFERENCE MARK NO. 2 IS SW FROM THE STATION AND 44-1/2 FEET
GA3420''FROM THE SE CORNER OF THE LOG CABIN.
GA3420''
GA3420''REFERENCE MARK NO. 3 (AZIMUTH MARK) IS 150 YARDS NE FROM
GA3420''THE STATION AT THE FOOT OF KNOB, ALONG THE TOP OF THE RIDGE,
GA3420''20 FEET W OF THE CENTER LINE OF ROAD LEADING TO THE STATION.
GA3420''
GA3420''TO REACH FROM NORTON, FOLLOW U.S. HIGHWAY 23 S THROUGH THE
GA3420''TOWN.  AT A POINT WHERE U.S. HIGHWAY 23 TURNS SW AFTER CROSSING
GA3420''THE RAILROAD TRACKS, TAKE DIRT ROAD GOING E BY THE OLD DOMINION
GA3420''ICE PLANT 4.7 MILES UP THE MOUNTAIN TO THE STATION.
GA3420''
GA3420''HEIGHT OF LIGHT ABOVE STATION MARK - 1-1/2 METERS.
GA3420
GA3420                          STATION RECOVERY (1933)
GA3420
GA3420''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1933
GA3420''RECOVERED IN GOOD CONDITION.
GA3420
GA3420                          STATION RECOVERY (1960)
GA3420
GA3420''RECOVERY NOTE BY VIRGINIA DEPARTMENT OF HIGHWAYS 1960
GA3420''STATION FOUND IN GOOD CONDITION.  LOCATED ON THE SUMMIT OF
GA3420''A BARE TOP KNOB ABOUT 3 MILES SW OF NORTON, ON THE EAST EDGE
GA3420''OF THE SUMMIT, 18.3 FEET NE OF NE CORNER OF OBSERVATORY BUILDING,
GA3420''24.3 FEET NE OF NW CORNER OF THE OBSERVATORY.
GA3420''
GA3420''TO REACH THE STATION FROM NORTON, GO 4.10 MILES E ALONG ROUTE
GA3420''619 TO THE INTERSECTION OF ROUTE 238, GO N ON ROUTE 238 FOR
GA3420''0.50 MILE TO A FORK, TURN RIGHT AND GO 0.10 MILE SOUTH TO
GA3420''OBSERVATORY ON HIGH KNOB.
GA3420
GA3420                          STATION RECOVERY (1963)
GA3420
GA3420''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (CTP)
GA3420''STATION AND REFERENCE MARKS REMAIN IN GOOD CONDITION.
GA3420''
GA3420''TO REACH STATION FROM NORTON, VA., FOLLOW U.S. HIGHWAY 23
GA3420''SOUTH TO A POINT WHERE THE OLD HIGHWAY TURNS LEFT ACROSS THE
GA3420''RAILROAD.  CROSS RR TO SCHOOL AND THEN FOLLOW RTE 619 E
GA3420''APPROXIMATELY 5 MILES TO THE TOP OF THE MOUNTAIN AND HIGH
GA3420''KNOB OBSERVATION TOWER.
GA3420
GA3420                          STATION RECOVERY (1963)
GA3420
GA3420''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (ELH)
GA3420''THE STATION MARK, REFERENCE MARKS NO. 1 AND NO. 2 WERE RECOVERED
GA3420''IN GOOD CONDITION.  RERERENCE MARK NO. 3 HAS BEEN DESTROYED.
GA3420''THERE HAS BEEN A LOOKOUT TOWER BUILT NEAR THE STATION.  REFERENCE
GA3420''MARK NO. 2 IS NOW OBSTRUCTED BY THE LOOKOUT TOWER.  REFERENCE
GA3420''MARK NO. 4 AND AN AZIMUTH MARK WAS ESTABLISHED AT THIS TIME.
GA3420''A NEW DESCRIPTION FOLLOWS.
GA3420''
GA3420''THE STATION IS LOCATED ON HIGH KNOB MOUNTAIN AT THE HIGH KNOB
GA3420''LOOKOUT TOWER, ABOUT 10 MILES EAST OF BIG STONE GAP, ABOUT
GA3420''8-1/2 MILES WEST OF COEBURN AND 2-1/2 MILES SOUTH OF NORTON.
GA3420''
GA3420''TO REACH THE STATION FROM THE POST OFFICE IN NORTON, GO
GA3420''SOUTH ON SEVENTH STREET FOR 0.05 MILE TO THE JUNCTION U.S.
GA3420''HIGHWAY 23, TURN RIGHT, WEST, ON U.S. HIGHWAY 23 AND GO 0.4
GA3420''MILE TO A CROSS-STREET, TURN LEFT, SOUTH, ON U.S. HIGHWAY
GA3420''ALT. 58 AND GO 0.15 MILE TO A SIDE ROAD RIGHT, TURN RIGHT,
GA3420''WESTERLY, ON STATE HIGHWAY 619 AND GO 0.3 MILE TO A FORK,
GA3420''TURN LEFT AND GO UP MOUNTAIN FOR 3.0 MILES TO A SIDE ROAD
GA3420''RIGHT, SIGN BEAVER DAM TRAIL, CONTINUE STRAIGHT AHEAD UP
GA3420''MOUNTAIN FOR 0.4 MILE TO A SIDE ROAD LEFT, TURN LEFT AND GO
GA3420''0.45 MILE TO A REVERSE Y, TURN SHARP RIGHT AND GO 0.15
GA3420''MILE TO A PARKING AREA AND THE END OF TRUCK TRAVEL.  PACK
GA3420''SOUTH UP HILL FOR ABOUT 100 YARDS TO THE LOOKOUT TOWER AND
GA3420''THE STATION.
GA3420''
GA3420''THE STATION MARK IS 18.1 FEET NORTHEAST OF THE NORTHEAST
GA3420''CORNER OF LOOKOUT TOWER.  IT IS A STANDARD DISK SET IN A SQUARE
GA3420''CONCRETE POST WHICH PROJECTS 2-INCHES AND STAMPED HIGH KNOB
GA3420''2 1933.  NOTE--1A 7A
GA3420''
GA3420''REFERENCE MARK NO. 1 IS 111 FEET SOUTH OF THE SOUTHEAST CORNER
GA3420''OF LOOKOUT TOWER.  IT IS A STANDARD DISK CEMENTED IN A DRILL
GA3420''HOLE IN OUTCROPPING BEDROCK WHICH PROJECTS 3-INCHES AND
GA3420''STAMPED HIGH KNOB 2 NO 1 1933.  NOTE--12A
GA3420''
GA3420''REFERENCE MARK NO. 2 IS 35.7 FEET SOUTHWEST OF THE SOUTHEAST
GA3420''CORNER OF LOOKOUT TOWER.  IT IS A STANDARD DISK CEMENTED IN
GA3420''A DRILL HOLE IN OUTCROPPING BEDROCK, FLUSH AND STAMPED HIGH
GA3420''KNOB 2 NO 2 1933.  NOTE--12A
GA3420''
GA3420''REFERENCE MARK NO. 4 IS 36 FEET SOUTH SOUTHWEST OF THE NORTHEAST
GA3420''CORNER OF LOOKOUT TOWER AND 34 FEET EAST OF THE SOUTHEAST
GA3420''CORNER OF LOOKOUT TOWER.  IT IS A STANDARD DISK CEMENTED IN
GA3420''A DRILL HOLE IN OUTCROPPING BEDROCK, FLUSH AND STAMPED HIGH
GA3420''KNOB 2 NO 4 1933.
GA3420''
GA3420''THE AZIMUTH MARK IS NEAR THE END OF A OPEN FIELD, 38 FEET
GA3420''NORTH OF THE APPROXIMATE CENTER OF TRACK ROAD AND 36.7 FEET
GA3420''NORTHEAST OF A METAL WITNESS POST.  IT IS A STANDARD DISK
GA3420''CEMENTED IN A DRILL HOLE IN OUT-CROPPING BEDROCK WHICH PROJECTS
GA3420''3-INCHES AND STAMPED HIGH KNOB 2 1933 RESET 1963.
GA3420''
GA3420''TO REACH THE AZIMUTH MARK FROM THE POST OFFICE IN NORTON,
GA3420''GO SOUTH ON SEVENTH STREET FOR 0.05 MILE TO THE JUNCTION
GA3420''U.S. HIGHWAY 23, TURN RIGHT, WEST, ON U.S. HIGHWAY 23 AND
GA3420''GO 0.4 MILE TO A CROSS-STREET, TURN LEFT, SOUTH, ON U.S.
GA3420''HIGHWAY ALT. 58 AND GO 0.15 MILE TO A SIDE ROAD RIGHT, TURN
GA3420''RIGHT, WESTERLY, ON STATE HIGHWAY 619 AND GO 0.3 MILE TO A
GA3420''FORK, TURN LEFT AND GO UP MOUNTAIN FOR 3.0 MILES TO A SIDE
GA3420''ROAD RIGHT, SIGN BEAVER DAM TRAIL, TURN RIGHT ON DIRT ROAD AND
GA3420''GO 0.25 MILE TO A GATE, CONTINUE FOR 0.05 MILE TO A GATE,
GA3420''CONTINUE WESTERLY ON ROAD ACROSS PASTURE FOR 0.1 MILE TO THE
GA3420''MARK ON THE RIGHT.
GA3420''
GA3420''HEIGHT OF LIGHT ABOVE STATION MARK 1.3 METERS.
GA3420
GA3420                          STATION RECOVERY (1964)
GA3420
GA3420''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (ELH)
GA3420''THE STATION MARK AND THE REFERENCE MARKS WERE RECOVERED
GA3420''AND FOUND IN GOOD CONDITION.  THE 1963 DESCRIPTION IS ADEQUATE.
GA3420
GA3420                          STATION RECOVERY (1969)
GA3420
GA3420''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (ALP)
GA3420''STATION WAS RECOVERED AS DESCRIBED BY E.L.H. IN 1963 AND ALL
GA3420''MARKS WERE FOUND TO BE IN GOOD CONDITION.  THE U.S. FOREST
GA3420''SERVICE REQUESTED THAT THE STATION MARK BE RELOCATED AS IT
GA3420''IS IN DANGER OF BEING DISTURBED BY THE CONSTRUCTION OF A
GA3420''NEW LOOKOUT TOWER.  STATION HIGH KNOB 3 WAS ESTABLISHED.
GA3420''STATION HIGH KNOB 2 WAS LEFT IN POSITION.  A DIFFERENCE
GA3420''WAS FOUND IN THE DISTANCE TO THE REFERENCE MARKS AND IN THE
GA3420''DIRECTION TO REFERENCE MARK NO. 1.  A DIFFERENCE WAS ALSO
GA3420''FOUND IN THE DIRECTION TO THE INTERSECTION STATIONS.  THE
GA3420''1963 DESCRIPTION IS ADEQUATE.
GA3420''
GA3420''AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES
GA3420''SOUTHWEST OF NORTON
GA3420
GA3420                          STATION RECOVERY (1993)
GA3420
GA3420''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993
GA3420''RECIVERED AS DESCRIBED IN 1963 BY CTP.
GA3420''THE STATION IS LOCATED ABOUT 10 MI (16.1 KM) EAST OF BIG STONE GAP,
GA3420''ABOUT 8.5 MI (13.7 KM) WEST OF COEBURN AND 2.5 MI (4.0 KM) SOUTHWEST
GA3420''OF NORTON, VA., ON HIGH KNOB MOUNTAIN AT THE HIGH KNOB LOOKOUT TOWER.
GA3420''OWNERSHIP--JEFFERSON NATIONAL FOREST.
GA3420''TO REACH THE STATION FROM THE POST OFFICE IN NORTON, GO SOUTH ON
GA3420''SEVENTH STREET FOR 0.05 MI (0.08 KM) TO THE JUNCTION OF U.S. HIGHWAY
GA3420''23 (MAIN STREET), TURN RIGHT, WEST, ON U.S. HIGHWAY 23 AND GO 0.4 MI
GA3420''(0.6 KM) TO A CROSS STREET, TURN LEFT, SOUTH, ON U.S. HIGHWAY
GA3420''ALTERNATE 58 AND GO 0.15 MI (0.24 KM) TO A SIDE ROAD RIGHT, TURN
GA3420''RIGHT, WESTERLY, ON STATE HIGHWAY 619 AND GO 0.3 MI (0.5 KM) TO A
GA3420''FORK, TAKE LEFT FORK AND CONTINUE UP MOUNTAIN ON STATE HIGWAY 619 FOR
GA3420''3.0 MI (4.8 KM) TO A SIDE ROAD RIGHT, CONTINUE STRAIGHT AHEAD UP
GA3420''MOUNTAIN FOR 0.4 MI (0.6 KM) TO A SIDE ROAD LEFT, TURN LEFT AND GO
GA3420''0.45 MI (0.72 KM) TO A REVERSE FORK, TURN SHARP RIGHT AND GO 0.15 MI
GA3420''(0.24 KM) TO A PARKING AREA AND THE END OF TRUCK TRAVEL.  PACK SOUTH
GA3420''UP HILL FOR ABOUT 150 YARDS TO THE LOOK OUT TOWER AND THE STATION.
GA3420''THE STATION PROJECTS 3 CM ABOVE THE LEVEL OF THE GROUND.  LOCATED 18.1
GA3420''FT (5.5 M) NORTHEAST OF THE NORTHEAST CORNER OF THE LOOK OUT TOWER.