Abstract: An irreducible radical field extension is one of prime degree $p$ which is formed by adjoining a $p$th root of an element. Can a solvable extension of the rationals always be decomposed into a chain of irreducible radical Galois extensions? The answer is clearly no; for example, take the field of 7th roots of unity. To reach this by prime-degree extensions, there must be a degree-3 extension at some point, and for this to be irreducible radical Galois, we will need to have the 3rd roots of unity present. However, if we throw in the 3rd roots of unity, so as to arrive at the 21st roots of unity, we can indeed decompose into a chain of irreducible radical Galois extensions. In general, let $M(n)$ denote the minimal degree of an extension of the rationals which can be reached by such a chain and which contains the $n$th roots of unity. So, in our example, $M(7)=12$. In this talk we will discuss the normal order of $M(n)$.