In the following subsections we provide various numerical results for Monte Carlo eigenvalue calculations and compare them to benchmark and discrete ordinates (SN) results. The comparison of results verifies the accuracy of our Monte Carlo algorithms and codes. The benchmark [Kap74] results are for one energy group, homogeneous slabs and are based on analytical transport theory. The discrete ordinate results were obtained using the TWODANT [O'De82] code. Monte Carlo eigenvalue results are given for both the source iteration and the fission matrix algorithms. All the test problems show here are for systems with isotropic scattering.