Marijuana withdrawal can be more intense than people sometimes realize. While heavy, chronic users may begin to exhibit signs of depression, many users experience insomnia, anxiousness, and irritability.
A New Era. Although diesel locomotives first came to American railroads in the 1920s, their use was confined to switch engines, and later to passenger train locomotives. It wasn't until 1940 that the Electro Motive Division of General Motors (EMD) demonstrated that diesels could practically replace steam locomotives in heavy-duty service.
1 Answer. 0. A. GOâs MP40 diesel locomotives use the best, cleanest technology available, meeting all US Environmental Protection Act (EPA) Tier 2 Emission Standards that are equivalent to the new US EPA Tier 3. The Tier 4 Standard will reduce particulate matter by 70 per cent, and NOx by 76 per cent.