20 CFR § 725.225
Determination of dependency; parent, brother, or sister
February 18, 2021
An individual who is the miner's parent, brother, or sister will be determined to have been dependent on the miner if, during the 1-year period immediately prior to the miner's death:
(a) The individual and the miner were living in the same household (see §725.232); and
(b) The individual was totally dependent on the miner for support (see §725.233(h)).