Figure F150. Remanent magnetization intensity (A) before and (B) after 20-mT AF demagnetization (Cores 210-1276A-58R through 68R). Even- and odd-numbered cores were retrieved by magnetic (i.e., conventional) and nonmagnetic rotary core barrels, respectively. NRM = natural remanent magnetization.

Figure F150. Remanent magnetization intensity (A) before and (B) after 20-mT AF demagnetization (Cores 210-1276A-58R through 68R). Even- and odd-numbered cores were retrieved by magnetic (i.e., conventional) and nonmagnetic rotary core barrels, respectively. NRM = natural remanent magnetization.