“…A concern with results in Table 3 is that they are potentially driven by shifts in industry mix: that is, more less skilled workers may attract less capital intensive industries (e.g., Goldin and Katz, 1998;James and Skinner, 1985) and this would alter capital ratios. To address this, we now turn to estimates that allow us to examine within industry responses to aggregate skill mix changes, using our data on production techniques detailed by area and industry.…”