These include Wadi Daliyeh, Masada, Wadi Seyal, Wadi Murabba’at and Khirbet Mird. Four of the scrolls tested—from the non-Qumran sites bore dates within the document, ranging from the mid-fourth century B. The probability that the document falls within the black bar (or bars) is 68 percent (one sigma).

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In general the C-14 tests appear substantially to validate the paleographic dating. The Swiss lab recognizes a problem with the C-14 test on the Testament of Kohath.

Professor Eisenman dates a number of Qumran documents later than the paleographers do, consistent with his theory that they reflect conditions during the last decades before the Roman destruction of Jerusalem in 70 C. The lab suggests that “chemical contamination” affected the result, although they do not explain how.

The Temple Scroll consists of 18 sheets of parchment, each of which has three or four columns of text; the lengthy scroll, spanning 26.74 feet (8.15 meters) and considered the largest scroll ever discovered in the Qumran caves, is now digitized online with English translations.

The site of Khirbet Qumran (a modern Arabic name) is located in the West Bank, near the northern edge of the Dead Sea, and is the place where the Dead Sea Scrolls were found in 11 nearby caves 70 years ago.

Most archaeologists have a working knowledge of radiocarbon dating.

This knowledge is less common among museum curators, conservators and preservation scientists whose collections may not be defined as archaeological, but nevertheless contain dateable materials.Ten of the 14 documents had been dated paleographically, but these dates were not made known to the scientists performing the C-14 procedures. If the calibration curve has peaks and curves, this will result in two bars with two different ranges.The paleographic dates varied from the mid-second century B. The probability that the date falls within one of these two ranges is still 68 percent.Carbon-14 (C-14) tests on samples of the Dead Sea Scrolls have substantially confirmed the previous date of the scrolls based on paleography (the shape of the letters), according to two recent reports.1 This general conclusion was announced in a press release some months ago, but when BAR asked Magen Broshi, curator of the Shrine of the Book in Jerusalem for a copy of the lab report, he refused to release it, stating, “Why should we give it to you when you taunt us?” Professor Israel Carmi of the Weizmann Institute of Science in Rehovot, Israel, promised to provide us with a copy, but later reported that he was instructed by his colleagues not to do so.The recent tests on the scrolls were performed in Zurich by the Institut für Mittelenergiephysick, which was involved in the C-14 dating of the Shroud of Turin. The results of the C-14 tests are expressed in terms of a probability that the date of the document falls within a particular range.