John Rogerson and Philip Davies, “Was the Siloam Tunnel Built by Hezekiah?” Biblical Archaeologist 59 (1996), pp. 138–149.
As Ronny Reich informs me, “The meeting place is also visible by a rock step in the ceiling. Tunnelers coming from the south dug about a half meter higher.”
Their contention that the inscription comes from the Hasmonean period has also been rejected based on radiometric age determinations. Amos Frumkin, Aryeh Shimron and J. Rosenbaum, “Radiometric Dating of the Siloam Tunnel, Jerusalem,” Nature 425 (2003), pp. 169–171.
Amihai Sneh, Eyal Shalev and Ram Weinberger, “The Why, How, and When of the Siloam Tunnel Reevaluated,” Bulletin of the American Schools of Oriental Research (BASOR) 359 (2010), pp. 57–65.
See, for example, the discussion and translation by Mordecai Cogan in William Hallo and K. Lawson Younger, eds., The Context of Scripture, vol. III (Leiden: Brill, 2003), pp. 300–302.
“The Divided Monarchy—The Kingdoms of Judah and Israel,” in Hershel Shanks, ed., Ancient Israel—From Abraham to the Roman Destruction of Jerusalem, 3rd ed. (Washington, DC: Biblical Archaeology Society, 2011), p. 185.
James B. Pritchard, ed., Ancient Near Eastern Texts Relating to the Old Testament, 3rd ed. (Princeton, NJ: Princeton Univ. Press, 1969), pp. 287–288.
Pritchard, ed., Ancient Near Eastern Texts, pp. 287–288.
The argument of Sneh, Shalev and Weinberger cited in endnote 4 has also been rejected on other grounds—regarding how the route of the tunnel was determined—in Aryeh E. Shimron and Amos Frumkin, “The Why, How and When of the Siloam Tunnel Reevaluated: A Reply to Sneh, Weinberger, and Shalev,” BASOR 364 (2011), p. 53.
Ronny Reich and Eli Shukron, “The Date of the Siloam Tunnel Reconsidered,” Tel Aviv 38 (2011), pp. 147–157.
The pottery is being studied in detail by Alon De Groot and Atalya Fadida. See Alon De Groot and Atalya Fadida, “The Pottery Assemblage from the Rock-Cut Pool Near the Gihon Spring,” Tel Aviv 38 (2011), pp. 158–166.
A recent carbon-14 study dating the tunnel to about 700 B.C.E. is not precise enough to distinguish between the reigns of Hezekiah and Yehoash. See Amos Frumkin and Aryeh Shimron, “Tunnel Engineering in the Iron Age: Geoarchaeology of the Siloam Tunnel,” Journal of Archaeological Science 33 (2006), p. 227.
I am grateful to Ronny Reich and Aren Maeir for their helpful comments. Of course, this should not be interpreted as implying agreement with what I have written.