Complex sentence: After his expulsion, Konanykhin took advantage of the loosening business climate in the wake of Mikhail Gorbachev's economic reforms ("perestroika"), and within a few years was head of a $30 Million construction enterprise.
Split into simpler sentences: After his expulsion, Konanykhin took advantage of the loosening business climate in the wake of Mikhail Gorbachev's economic reforms ("perestroika"). Within a few years, he became the head of a $30 Million construction enterprise.