| Eng # | Model | Builder | Date Built | Notes |
| 668 | HEP | AMTK | 1954 | Ex-AMTK/UP E9B |
| 8 | 50-ton | GE | 1950 | ex-Moshassuck Valley RR; Retired 1988 |
| 9 | 65ton | GE | 1943 | Moshassuck Valley RR; sold to Pennsylvania Power & Light |
| 101 | 40-ton | GE | 1924 | Warwick Railway;aquired by P&W 1984,scrapped 1984 |
| 104 | 50-ton | Atlas | 1940 | Warwick Railway;side rod unit;US Navy;scrapped 1984 |
| 120 | RS-3m | Alco | 1951 | Built as NYC 8246;to NYC 5246; to PC 5246; to Amtk 104; to Cape Cod 6055; to CCL 1201; to P&W 120,1997; to CCC 1201, 2000 |
| 150 | 25-ton | GE | 1945 | ex-New haven Terminal,aquired 1992; rebuilt by P&W |
| 161-165 | RS-3 | Alco | 1952 | D&H #4071,4075,4078,4082,4084, leased from 1973-75 and returned |
| 1201,1202 | SW-7 | EMD | 1950 | Ex-Conrail,Penn Central,New York Central #8845,8851; purchased 1991; 1201 sold to MSA Scrap 2002; 1202 sold to Seaview RR 2001, became Seaview #5 |
| 1501 | RS-2 | Alco | 1949 | Ex-Maine Central #553, purchased 1977; Scrapped 1982 |
| 1601,1602 | RS-3 | Alco | 1951 | Ex-Southern #2132,2141; purchased 1976; sold to Lamoille Valley 1982 |
| 1701,1702 | GP-9 | EMD | 1957 | Ex-Conrail,PC,Pennsylvania #7189,7205; purchased from EMD 1982; 1701 sold to Quabog Tranfer 1984; 1702 sold to Bay Colony 1996 |
| 1801 | U18B | GE | 1976 | Aquired New, Sold 2004 to Southern Railroad of New Jersey (SRNJ) |
| 1802 | GP-9E | EMD | 1954 | ex-CCCL #53; exx-Portala(CA) RR Museum #3191; exxx-SP #3191; exxxx-SP GP-9 #3010/3422/5893; nee-T&NO #283; sold to Housatonic RR in 2001 |
| 2001-2005 | M420R | MLW | 1974,75 | Aquired New; retired 1994; 2001,2003,2005 went to Iowa Interstate RR, retired by Iowa Interstate in 2005 now owned by SRNJ as there 800,801,802; 2002,2004 aquired by Mass Central, then by Maine Coast RR ,then aquired by NRE in 2003 (rumored to be in Canada); |
| 2006-2009 | GP38-2 | EMD | 1980,82 | Aquired New |
| 2010,2011 | GP38-3 | EMD | 1969 | ex-Conrail,PC #7794,7808; aquired from Helm Leasing 1984; rebuilt to dash 3 specs by Paducah Locomotive between 1999-2000 |
| 2201 | B23-7 | GE | 1978 | Aquired New, currently Being rebuilt by RMDI with new prime mover & etc. |
| 2202-2208 | U23B | GE | 1977 | ex-Conrail #2792,2798,2795,2790,2797,2796,2794; CR #2798 (PW #2203) was last U23B GE built and has been sold to RR Museum of New England; all units sold 2002-2003 for ex-LMX B39-E's & ex-NYSW B40-8's; 2202 to PRL,2205 to BDLX |
| 2209-2211 | U23B | GE | 1976 | ex-CSX #3311,3315,3300; nee SBD/L&N #2781,2785,2770; 2 units sold 2002-2003 for ex-LMX B39-8E's; 2210 sold to Morgantown Power Plant in Woodzell, Md 10/04; 2211 sold to Finger Lakes Railway 2006, painted in Lehigh Valley & renumbered FGLK #2201 |
| 2212-2214 | B23-7 | GE | 1982 | ex-CSX #3117,3124,3126; nee-SBD/L&N #5117,5124,5126; 2214 sold to RMDI; 2212,2213 sold to RMDI |
| 2215 | B23-7R | GE | 1988 | ex-GERX #2000; first Super-7 unit rebuilt from WP U23B #2263 |
| 2216 | B23-7R | MK | 1989 | ex-GERX #2002; Rebuilt from WP U23B #2257 |
| 3001-3003 | GP40 | EMD | 1966/71 | ex-GRR #9401-9403; 3001 ex-CSX #6596;nee B&O #4021; 3002,3003 ex-CSX/SBD #6688,6726; nee-SCL #1532,1571; 3003 also nee-SAL #617 |
| 3004-3008 | B30-7A | GE | 6/82-8/82 | ex-BN cabless units ,# 4008,4014,4021,4028,4029 |
| 3901-3909 | B39-8E | GE | 1987/88 | ex-LMX/GE #8540,8502,8594,8567,8533,8550,8504,8557,8535 |
| 4001-4004 | B40-8 | GE | 1988 | ex-NYSW #4002,4004,4006,4008 |
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