Rebuilt City Starts to Feel Effects of the Slowdown
Pittsburgh, which re-invented itself as home for many high technology companies and dot-com start-ups, is feeling effects of economic slowdown; in Pittsburgh, and in cities like it around country, business executives are cutting back; their curtailment of investment spending and expansion plans is contributing to what now appears to be nationwide slide toward recession; Labor Dept reports employers shed 86,000 jobs in March, largest drop for one month since Nov 1991; home construction and auto sales remain solid, and job growth, while slowing, has not yet braked enough to push jobless rate above still low 4.3 percent; it is lag in capital spending that is pulling down rest of economy; Pittsburgh, like other cities that diversified and thrived in 1990's, shedding their reliance on single industry, are entering their first hard times in their new garb; city must continually add small, vigorous enterprises to sustain prosperity, and momentum is fading; photo; graphs (M)
