Would appreciate some help on the library research benefits. After completing a research project, do I need to keep the library as a facility in my lot to retain the research benefits or are the research benefits permanent? In other words, if I researched box mines at the library and later razed the library to make way for a garden, can I continue to produce box mines? I assume that the answer is yes but wanted to make sure before making these changes. I know that the library as a facility brings certain benefits such as improved wits training and occasionally having the option of letting in outsiders for ammo but for the purposes of long term sustainability, I think having a garden would be a bit better. Thanks in advance for your help.