Aluminium-conductor steel-reinforced cable coating thickness would be designated GC2. Higher strength grades of steel are designated high-strength (3), extra-high-strength (4), and ultra-high-strength (5). An ultra-high-strength galvanized steel core with class A coating thickness would be designated GA5. The use of higher strength steel cores increases the tensile strength of the conductor allowing for higher tensions which results in lower sag. Zinc-5% aluminium mischmetal coatings are designated with an "M". These coatings provide increased corrosion protection and heat resistance compared to zinc alone. Regular strength Class "A" mischmetal thickness weight coated regular strength steel would be designated MA2. Aluminium-clad steel is designated as "AW".
What Work Is sometimes been criticized for leaning too hard on his blue-collar "bona fides". The critic Adam Kirsch, writing in "The Times Book Review" in 1999, noted, accurately enough, that “in his autobiographical essays he goes out of his way to tell us that he is essentially a peasant.” David Baker, writing about "What Work Is" (1991) in the "Kenyon Review", said Levine has “one of our most resonant voices of social conviction and witness, and he speaks with a powerful clarity…What Work Is may be one of the most important books of poetry of our time. Poem after poem confronts the