Replenishable liquid lithium plasma facing components have been proposed for density and impurity control, tritium and dust removal, and long-lifetime walls for DT reactors by providing a low-Z, absorbing, and self-healing plasma facing surface. Motivated by this potential, lithium pellet injection, evaporated lithium, and injected lithium powder have been used in succession to apply lithium coatings to graphite plasma facing components in National Spherical Torus Experiment (NSTX) high-power divertor plasma experiments. In 2005, following wall conditioning and LPI, discharges exhibited edge density reduction and performance improvements. Since 2006, first one, and now two lithium evaporators have been used routinely to evaporate lithium on to the lower divertor region at total rates of 10-70 mg/min for periods 5-10 min between discharges. Since 2008, prior to each discharge, the evaporators are withdrawn behind shutters. Significant improvements in the performance of NBI heated divertor discharges resulting from these lithium depositions were observed. In 2010, these evaporators were used for almost all NSTX experiments. The improvements in NBI-heated divertor discharges resulting from these lithium depositions include: reduced edge recycling; increased energy confinement; suppression of edge localized modes (ELMs); and decreases in the inductive flux consumption resulting in longer pulse lengths. Initial work with injecting fine lithium powder into the edge of NBI heated deuterium discharges using a recently developed piezoelectric resonant acoustic injector, yielded comparable changes in performance. The next step in this work now in progress is testing of a Liquid Lithium Divertor (LLD) surface that was installed recently on the outer part of the lower divertor. The LLD consists of a toroidal array of 20 cm wide plates with a 165 micron layer molybdenum with 45% porosity, plasma sprayed on a protective barrier of 0.25 mm stainless steel, bonded to a 2.2 cm thick Cu. Several technology issues encountered with lithium wall conditions are discussed.