| 1 | A | B | C | D | E | F | G |
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| 2 | Thorne and Hatfield Moors - Locomotive details |  |  |  |  |  |  |
| 3 | Location | Builder | Type | Built | Scrapped | Works number | Notes (Most details from Booth 1998. Some from Limbert & Roworth 2009) |
| 4 | Moorends | Moorends Works | 4w | 1947 | 1960 | - | Built from wooden wagon chassis and Austin Swallow car by works fitter. |
| 5 | Swinefleet | James & Frederick Howard | 4w | 1930 | 1959 | - | Bought second-hand in 1955. 31 hp petrol engine replaced with Dorman diesel engine by 1956. |
| 6 | Swinefleet | Ruston and Hornsby | 4w LBT | 1959 | Preserved | 432661 | 31.5 hp 2-cylinder 2-YDAL engine. Named "Simba". |
| 7 | Medge Hall | Ruston and Hornsby | 4w LBT | 1959 | Preserved | 432665 | 31.5 hp 2-cylinder 2-YDAL engine. Transferred to Swinefleet in 1966. |
| 8 | Hatfield | Ruston and Hornsby | 4w LBT | 1962 | Preserved | 466594 | 31.5 hp 2-cylinder 2-YDAL engine. Moved to Swinefleet 1969. |
| 9 | Swinefleet | Lister | 4w RM2X | 1964 | Preserved | 53976 | 8.5 hp. Regauged to 2 ft 6 in (762 mm) after preservation. |
| 10 | Swinefleet | Lister | 4w RM2X | 1964 | - | 53977 | 8.5 hp. Attacked by vandals with a mechanical digger in 1991. |
| 11 | Hatfield | Lister | 4w RM24 | 1964 | 1987 | 54184 | 8.5 hp. Moved to Swinefleet after 1975 |
| 12 | Hatfield | Lister | 4w RM1 | 1967 | - | 55471 | 4.25 hp. Moved to Swinefleet 1969. Dismantled early 1980s. |
| 13 | Hatfield | Simplex | 4w 40s | 1967 | Preserved | 40s302 | At Crowle Peatland Railway, undergoing restoration. |
| 14 | Hatfield | Simplex | 4w 40s | 1971 | 1988 | 40s378 | Dorman 2LD 40 hp engine. |
| 15 | Hatfield | Hunslet | 4w | 1974 | Preserved | 7366 | Perkins engine. Moved to Swinefleet by 1988. Regauged to 2 ft 6 in (762 mm) after preservation. |
| 16 | Hatfield | Hunslet | 4w | 1974 | Preserved | 7367 | Perkins engine. Regauged to 2 ft 6 in (762 mm) after preservation. |
| 17 | Hatfield | Fritz Schöttler (W Germany) | 4w Diema DFL 10/11 | 1974 | Preserved | 3543 | 8.5 hp engine later replaced by a 10 hp Deutz engine. Disused from 1979 to 1983. |
| 18 | Swinefleet | Diema | 4w | 1976 | Preserved | - | Built at Swinefleet from parts supplied by Diema. Rebuilt 1986 with parts from Diema 3543. |
| 19 | Hatfield | Simplex | 4w | 1949 | 1989/90 | 10159 | Bought second-hand. At Swinefleet by 1982. |
| 20 | Hatfield | Simplex | 4w | 1950 | Sold | 10160 | Bought second-hand in 1977 from London Brick Co, Arlesey. Sold to May-Gurney 1984. Worked on Southend Pier contract in 1985. |
| 21 | Hatfield | Simplex | 4w | 1955 | 1987 | 10455 | Bought second-hand in 1977 from London Brick Co, Arlesey. |
| 22 | Swinefleet | Simplex | 4w | 1978 | - | 40SD507 | - |
| 23 | Hatfield | Simplex | 4w | 1983 | - | 40SD527 | Out of use by 1994, abandoned in 1997. |
| 24 | Hatfield | Schöma | 4w+4w CHL-60G | 1990 | Preserved | 5129 + 5131 | 78 kW master unit with powered slave unit. At Crowle Peatland Railway awaiting restoration. |
| 25 | Hatfield | Schöma | 4w+4w CHL-60G | 1990 | Preserved | 5130 + 5132 | 78 kW master unit with powered slave unit. Locomotive at Hatfield Works, carrying "The Thomas Buck" nameplate. |
| 26 | Swinefleet | Schöma | 4w+4w CHL-60G | 1991 | Preserved | 5220 + 5221 | 65 kW master unit with powered slave unit. Named "The Thomas Buck" in 1993. At Crowle Peatland Railway awaiting restoration. |

Question: When did Thorne and Hatfield Moors most recently build locomotives, and what class were they?
Answer: Thorne and Hatfield Moors most recently built class 4w+4w CHL-60G locomotives, which were built in 1990-91.