The list of Loco Sheds n Loco Holdings in States!!
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Tamil Nadu: -
1:- Royapuram:- WAP-1, WAP-4, WAP-7 (cs)
2:- Erode:- WDM-2c, WDM-2A, WDM-3A, WDM-3c, WDM-3D, WDG-3A WAP-4, WAG-7
3:- Arrakanomm:- WAM-4, WAP-1, WAP-4
4:- Tondiarpet:- WDM-2A, WDM-7 (Bio Diesel)
5:- Ponnamalai:- WDM-2A, WDP-1, WDP-3A, WDP-4, WDP-4B
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Kerala:-
1:- Ernakulam:- WDM-2A, WDM-3A, WDM-3D, WDG-3A,...
Read more...

WDS-6
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Andhra Pradesh:-
1:- Gooty:- WDM-2A, WDM-3A,WDM-3D, WDG-3A, WDM-3F
2:- Guntakal:- WDM-3A, WDM-3D, WDG-3A
3:- Lallaguda:- WAP-4, WAP-7, WAG-7, WAG-9
4:- Maula Ali:- WDM-2A,WDM-3A, WDG-3A
5:- Kazipet:- WDM-2A, WDM-3A, WDG-3A, WAG-7
6:- Vijayawada:- WDP-1, WDS-6, WAM-4, WAG-5, WAG-7
7:- Visakhapatnam:- WDM-2A, WDM-3A, WDG-3A, WDS-6, WAM-4, WAG-6, WAG-7
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Karnataka:-
1:- Krishnarajapuram:- WDS-6 WDM-2c, WDM-2A, WDM-3A, WDG-3A, WDP-4, WDG-4
2:- Hubli:- WDP-4, WDG-4, WDP-4B
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Maharashtra:-
1:- Kalyan:- WDM-2A, WDM-3A, WDM-3D, WDG-3A, WAG-5, WCAM-1, WCAM-2, WCAM-3, WCAM-2P, WCAG-1
2:- Ajni:- WAP-7, WAG-7
3:- Bhusaval:- WAM-4, WAP-4
4:- Pune:- WDM-2A, WDM-3A, WDM-3D, WDG-3A, WDG-4
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Gujarat:-
1:- Vadodara:- WAM-4, WAP-4, WAP-5, WAG-5
2:- Vatva:- WDM-2A, WDM-3A, WDM-3D, WDG-3A
3:- Valsad:- WCAM-1, WCAM-2p, WAG-5
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Chattisgarh:-
1:- Raipur:- WDM-3A, WDG-3A, WDG-4
2:- Bhilai:- WAM-4,
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Madhya Pradesh
1:- Ratlam:- WDM-2A, WDM-3A, YDM
2:- Itarsi:- WDP-4, WDP-4B, WAM-4, WAP-4, WAG-7
4:- Katni:- WDM-2A, WDM-3A, WDM-3D, WAG-7
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Jharkhand:-
1:- Tata:-WAM-4, WAG-5, WAG-7, WAG-9(cs)
2:- Bokaro:- WDM-2A
3:- Gomoh:- WAP-7, WAG-7, WAG-9
4:- Patratu:- WDM-2A, WDM-3A, WDM-3D
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West Bengal:-
1:- Howrah:- WDM-2A, WDM-3A, WDS-6 WDM-3D, WAP-4, WAP-7
2:- Barddhamann:- WDM-3A, WDM-2A, WDG-3A, WDM-6
3:- Santragachi:- WAP-4
4:- Siliguri:- WDM-2A, WDP-4, WDG-4
5:- Andal:- WDM-2A, WAG-7
6:- Asansol:- WAM-4, WAP-4, WAP-6(R), WAG-5, WAG-7, WAG-9(cs)
7:- Kharagpur:- WDM-2A, WDM-3A, WDM-3B
8:- Malda Town:- WDM-2, WDM-3A
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Odisha:-
1:- Angul:- WAG-5, WAG-7
2:- Bondamunda:- WDM-3A, WDG-3A
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Bihar:-
1:- Samastipur:- WDM-2A, WDM-3A
2:- Jamlapur:- WDM-2A, WDM-3A
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Uttar Pradesh:-
1:- Ghaziabad:- WAM-4, WAP-1, WAP-4, WAP-5, WAP-7
2:- Lucknow:- WDM-2A, WDM-3A, WDG-4
3:- Kanpur:- WAM-4, WAP-4, WAG-7
4:- Mughal Sarai:- WAM-4, WAP-4, WAG-7
5:- Izzatnagar:- WDM-2A, WDM-3A
6:- Gonda:- WDM-2, WDM-3A, WDM-3B, WDM-3C, WDM-3D, WDS-6
7:- Jhansi:- WAG-7,WDM-2, WDM-3A, WDM-3B, WDG-3A, WDS-6
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Delhi:-
1:- Tuglaqbaad:- WDM-2A, WDM-3A, WDM-3D, WDP-1, WDP-3A, WDP-4, WDP-4B, WDP-4D, WAG-5, WAG-7, WAG-9
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Rajasthan:-
1:- Abu Road:- WDP-4, WDM-3A, WDM-3D, WDG-3A
2:- Bhagat Ki Kothi:- WDM-3D, WDP-4, WDP-4B
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Punjab:-
1:- Ludhiana:- WDM-2A, WDM-3A, WAP-4
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Assam:-
1:- Guwahati:- WDM-2, WDM-2A WDS-6, WDM-3A
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These are the latest updates till now.
CS means Coming soon to the respective sheds
R means Rare cases
Any more updations, they're welcome!!