  We present electrical transport measurements in natural graphite and highly
ordered pyrolytic graphite (HOPG), comparing macroscopic samples with
exfoliated, nanofabricated specimens of nanometer thickness. The latter exhibit
a very large c-axis resistivity $\rho_c$ -- much larger than expected from
simple band theory -- and non-monotonic temperature dependence, similar to
macroscopic HOPG, but in stark contrast to macroscopic natural graphite. A
recent model of disorder-induced delocalization is consistent with our
transport data. Furthermore, Micro-Raman spectroscopy reveals clearly reduced
disorder in exfoliated samples and HOPG, as expected within the model --
therefore presenting further evidence for a novel paradigm of electronic
transport in graphite.
