Sec. 10. DEATH BENEFITS, FATHER, ETC. If any member of the fire department or police department dies from injuries received or disease contracted while in the line of duty, or from any cause through no fault of his own, who was a contributor to said fund and entitled to participate in said fund himself, leaves no wife or child, but who shall leave surviving him a dependent father, mother, brother, or sister, wholly dependent upon said person for support, such dependent father, mother, sister and brother shall be entitled to receive in the aggregate one-half of the salary earned by said deceased immediately prior to his death, to be equally divided between those who are wholly dependent on said deceased, so long as they are wholly dependent. The board shall have authority to determine the facts as to the dependency of said parties and each of them, as to how long the same exists, and may at any time upon the request of any contributor to such fund, reopen any award made to any of said parties and discontinue such pension as to all or any of them as it may deem proper, and the findings of said board in regard to such matter and as to all pensions granted under this law shall be final upon all parties seeking a pension as a dependent of said deceased, or otherwise, until such award of the trustees shall have been set aside or revoked. The provisions of this section are subject to change under the provisions of Section 10A of this Act.