2-8-8-4 wheels. The locomotive's superstructure was attached to the rear group, while the forward group and leading truck could swing laterally on curves. All Yellowstones had fairly small drivers of . (For greater speeds, the Union Pacific Railroad chose a four-wheel leading truck and drivers of for its Big Boy 4-8-8-4 class.) Several classes of Yellowstone, especially the Duluth, Missabe and Iron Range's locomotives, are among the largest steam locomotives, with the exact ranking depending on the criteria used. The Northern Pacific Railway was the first railroad to order a 2-8-8-4. The first was built in 1928 by American Locomotive Company;
Minim (unit) fluid drachm, all already obsolete. Actual delegalization occurred on 1 February 1971. The use of the minim, along with other such measures, has been reduced by the adoption of the metric system, and even in the least metricated countries, pharmacy is largely metricated and the apothecaries' system is deprecated. The unit may rarely persist in some countries in the measurement of dosages of medicine. Minim (unit) The minim (abbreviated min, , , or ) is a unit of volume in both the imperial and US customary systems of measurement. Specifically it is of a fluidram or of a fluid ounce.