File:66701 Mountfield to Doncaster Down Decoy 4E19 empty gypsum (15606421011).jpg

GB Railfreight's class 66/7 (JT42CWR) number 66701 in First GBRf blue and mustard yellow livery with orange cantrail and solebar stripes. Here it is photographed hauling empty gypsum containers mounted on flat wagons from Mountfield Sidings (GBRf) East Sussex to Doncaster Down Decoy (4E19) on 21 October 2014. To comply with gas emission regulations limestone (CaCO3) delivered to the power station (by other trains) is used to remove sulfur dioxide (SO2) from the flue gasses, by converting it into gypsum (CaSO4·2H2O). The waste product (gypsum) is then delivered to British Gypsum's Robertsbridge Works by train where it is used to manufacture plaster and plasterboard. 66701 (works number 20008201-1) was built by General Motors Electro-Motive Division, London, Ontario, Canada in 2001 and unloaded from the Heavy Lift Ship MV "Jumbo Challenger" at Newport Docks in March 2001.

According to Realtime Trains the route and timings were; Mountfield Sidings [XMX]....1130.........................1130...........................RT Mountfield Tunnel.................1132..........................1131..............................1E Robertsbridge [RBR].............1134 1/2...................1138 1/2......................4L Wadhurst [WAD]....................1147..........................1150 1/4......................3L Tunbridge Wells [TBW] 1.....1156/1158................1158 3/4/1200 1/2....2L Tonbridge [TON] UF.............1213..........................1214 1/4.......................1L Sevenoaks [SEV] 1.................1223........................1225 1/2.....................2L Chelsfield [CLD].....................1229 1/2..................1232...........................2L Orpington [ORP] 2.................1231..........................1233 1/4.....................2L Petts Wood Junction............1232 1/2..................1236 3/4....................4L Bickley Junction[XLY]..........1252........................1239.........................13E Bromley South [BMS]...........1257.........................1242 1/4...................14E Shortlands [SRT]....................1300........................1243 3/4..................15E Shortlands Junction..............1301.........................1244 3/4..................16E Bellingham [BGM].................1304 1/2..................1247 1/2...................16E Nunhead [NHD] 1...................1308........................1302 1/2....................5E Peckham Rye [PMR] 3..........1309 1/2..................1305 3/4....................3E Crofton Road Junction.........1310 1/2...................1310...........................RT Denmark Hill [DMK] 1............1311 1/2....................1311............................RT Voltaire Road Junction........1317..........................1319............................2L Clapham Junction [CLJ] 5...1328 1/2..................1334 1/2.....................6L Wandsworth Town 2............1330 1/2..................1337............................6L Putney [PUT] 3.......................1334.........................1339...........................5L Barnes [BNS] 3.......................1337.........................1341 3/4.....................4L Barnes Bridge [BNI] 2...........1339.........................1343 1/2.....................4L Chiswick [CHK] 2...................1341 1/2...................1345 3/4....................4L New Kew Junction................1344.........................1350...........................6L Kew East Junction................1347.........................1351............................4L Acton Central [ACC].............1355........................1355 1/4....................RT Acton Wells Junction...........1357 1/2..................1401 3/4.....................4L Willesden Junction 4............1359 1/2..................1405...........................4L Kensal Green Junction........1403 1/2..................1407...........................3L Brondesbury Park [BSP] 1....1407.........................1409...........................2L West Hampstead 2...............1409 1/2..................1411..............................1L Hampstead Heath 2.............1413..........................1413 1/4.....................RT Gospel Oak [GPO].................1415..........................1415...........................RT Upper Holloway [UHL] 2.....1419 1/2...................1417 1/2.......................1E Alexandra Palace [AAP] 3...1443.........................1441 1/2.......................1E New Southgate [NSG] 4......1446.........................1445..........................RT Oakleigh Park [OKL] 4..........1450........................1449 1/4....................RT New Barnet [NBA] 4..............1451 1/2...................1450 1/2....................RT Hadley Wood [HDW] 4.........1454 1/2..................1453 1/2....................RT Potters Bar [PBR] 4................1459........................1459..........................RT Brookmans Park [BPK] 4......1502........................1502..........................RT Welham Green [WMG] 2......1504........................1503 3/4...................RT Hatfield [HAT] 3.....................1507 1/2..................1507 3/4...................RT Welwyn Garden City 3.........1512.........................1511 1/2......................RT Digswell Junction..................1514/1525...............NoRep/1518..............7E Welwyn North [WLW] 2........1526 1/2..................1519 1/2......................7E Woolmer Green Junction....1529........................1521 3/4.....................7E Knebworth [KBW] 4...............1530........................1523 1/4....................6E Stevenage [SVG] 4................1532 1/2..................1525 1/2....................6E Hitchin [HIT] 2........................1540........................1533..........................6E Arlesey [ARL] 2......................1544.........................1540 1/4.....................3E Biggleswade [BIW] 4............1547 1/2..................1545 1/4....................2E Sandy [SDY] 2........................1550........................1547 3/4...................2E St Neots [SNO] 1....................1556........................1554 1/2......................1E Huntingdon [HUN] 3.............1602........................1602 3/4...................RT Holme Junction [XHO].........1611 1/2....................1614............................2L Fletton Junction.....................1617 1/2...................1621............................3L Peterborough [PBO] 4.........1621/1635 1/2.........1625/1629................6E Helpston Junction.................1643.........................1637...........................6E Tallington Junction...............1647 1/2..................1641 3/4....................5E Stoke Junction.......................1705/1710...............NoRep/1724 1/4.....14L Grantham [GRA] 2.................1717..........................1732 1/4...................15L Claypole Loop........................1725 1/2..................1740 3/4..................15L Newark North Gate 1............1729 1/2/1734 1/2..1749/1749................14L Newark Crossing East Jn....1737.........................1752 1/2...................15L Gainsborough Lea Road ....1819.........................1829.........................10L Gainsborough Trent Jn........1827 1/2..................1831............................3L Bessacarr Junction...............1851.........................1848 1/2....................2E