  We observed 7 INTEGRAL sources with the Chandra X-ray Observatory to refine
their localization to ~2 arcsec and to study their X-ray spectra. Two sources
are inferred to have a Galactic origin: IGR J08390-4833 is most likely a
magnetic cataclysmic variable with a white dwarf spin period ~1,450 s; and IGR
J21343+4738 is a high-mass X-ray binary. Five sources (IGR J02466-4222, IGR
J09522-6231, IGR J14493-5534, IGR J14561-3738, and IGR J23523+5844) prove to be
AGN with significant intrinsic X-ray absorption along the line of sight. Their
redshifts and hard X-ray (17-60 keV) luminosities range from 0.025 to 0.25 and
from ~2x10^43 to ~2x10^45 erg/s, respectively, with the distance to IGR
J14493-5534 remaining unknown. The sources IGR J02466-4222 and IGR J14561-3738
are likely Compton-thick AGN with absorption column densities NH>10^24 cm^-2,
and the former further appears to be one of the nearest X-ray bright,
optically-normal galaxies. With the newly-identified sources, the number of
heavily-obscured (NH>10^24 cm^-2) AGN detected by INTEGRAL has increased to
~10. Therefore, such objects constitute 10-15% of hard X-ray bright, non-blazar
AGN in the local Universe. The small ratio (<<1%) of soft (0.5-8.0 keV) to hard
(17-60 keV) band fluxes (Chandra to INTEGRAL) and the non-detection of optical
narrow-line emission in some of the Compton-thick AGN in our sample suggests
that there is a new class of objects in which the central massive black hole
may be surrounded by a geometrically-thick dusty torus with a narrow ionization
cone.

Astrophysics