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<blockquote data-quote="Sandpatch" data-source="post: 619624" data-attributes="member: 10543">Neat photos!&nbsp; These were a complete mystery to me too.&nbsp; Did some research and found that they're SD33ECO type and are numbered 6210-6214 with three more (6215-6217) on the way.&nbsp; These units achieve low Tier 3 emissions, hence the special paintwork.They're rebuilt from old SD-40s and SD-40-2s and the work is being done at the NS shops in Altoona, PA.&nbsp; The odd-looking mate is indeed a slug and these too are created from old SD-40s.&nbsp; The units you saw have a Georgia map on the hood and were partially paid for by Georgia taxpayers, and should be working there.&nbsp; Let's not say anything. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll eyes&nbsp; &nbsp; :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></blockquote>

[QUOTE="Sandpatch, post: 619624, member: 10543"] Neat photos! These were a complete mystery to me too. Did some research and found that they're SD33ECO type and are numbered 6210-6214 with three more (6215-6217) on the way. These units achieve low Tier 3 emissions, hence the special paintwork. They're rebuilt from old SD-40s and SD-40-2s and the work is being done at the NS shops in Altoona, PA. The odd-looking mate is indeed a slug and these too are created from old SD-40s. The units you saw have a Georgia map on the hood and were partially paid for by Georgia taxpayers, and should be working there. Let's not say anything. :rolleyes: [/QUOTE]

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