  We present results from a high precision NRQCD simulation of the quenched
$\Upsilon$ system at $\beta = 6$. We demonstrate a variety of important lattice
techniques, including the perturbative improvement of actions, tadpole
improvement, and multicorrelated fits for extracting the spectrum of excited
states. We present new determinations of $\alpha_s(M_Z)$ and $M_b$, two
fundamental parameters of the Standard Model.
