To obtain such positron microbeam, it is necessary to use objective lenses, which are commonly used in the electron microscopy. We also attempted to form the positron microbeam using a positron beam for the positron diffraction experiment and a SEM optics [6]; [7] ; [8].
Publicly Traded Companies that Benefited from Forced or Slave Labor, 1929-1945 CalPERS
The archetypal and best-known form of unfree labour is chattel slavery, in which individual workers are legally owned throughout their lives, and may be bought, sold or otherwise exchanged by owners, while never or rarely receiving any personal benefit from their labour.