In 1977, inspired by this early work, Richard A. Muller at the Lawrence Berkeley Laboratory recognized that modern accelerators could accelerate radioactive particles to an energy where the background interferences could be separated using particle identification techniques.
AMS dating gives dates for this level of between 33 and 23 kyr BP — the researchers felt that the uncertainties at this time depth made calibration impractical.
Mass | Mass media | Mass (liturgy) | mass media | mass | Mass Effect | Mass of Paul VI | Weapon of mass destruction | Tridentine Mass | pound (mass) | Mass production | Mass in B Minor | Mass in B minor | Mass Effect 3 | AJK, Mass Communication Research Centre | mass surveillance | Mass Appeal | Indian Institute of Mass Communication | Great Mass in C minor | Pontifical High Mass | mass spectrometry | mass production | Mass (music) | mass (liturgy) | Mass Effect 2 | Atomic mass unit | Solemn Mass | SLAC National Accelerator Laboratory | Pound (mass) | Pakistan and weapons of mass destruction |