Recent studies have reported deficits in 182 W, the decay product of short-lived 182 Hf (t 1/2 = 8.9 Ma), in ocean island basalts (OIB). Some OIB with 182 W deficits are associated with mantle plumes that extend to the base of the mantle, the D '' layer (e.g., Mundl et al., 2017). Entrained material from the base of the mantle may be transported via mantle plumes to the shallow mantle, where partial melting produces OIB. In principle, observed 182 W deficits of OIB may thus be inherited from (a) mantle material that underwent crystal-liquid fractionation during the life-time of 182 Hf, that is, within the first 60 Ma of Solar System formation (e.g., Mundl et al., 2017), (b) interaction with the core at any time during Earth's history, with the core having an estimated μ 182 W value (defined as the part per million deviation of a sample's 182 W/ 184 W from a W standard) of ca. −220 (e.g., Mundl-Petermeier et al., 2020;Rizo et al., 2019), or (c) a preserved overabundance of late-accreted materials, with an estimated μ 182 W value also around −200, within mantle material (e.g., Puchtel et al., 2020).