Maybe there could be a synergy between nuclear energy, cement production and aviation.
Build a small modular reactor (such as Moltex) on the same site as cement works.
Reactor provides heat for the cement making process as well as producing hydrogen from water.
CO2 is captured from the cement making process and combined with the hydrogen to make liquid hydrocarbon fuel for long haul aviation.
CO2 is emitted when the fuel is burnt, but...
Cement is made into concrete structures which absorb CO2 during their lifetime.