In which form the standards of the medical re-examination by the Appellate medical Board are laid down?

Answer: Option D

Option A: Form P
Form P is not the correct form for the standards of medical re-examination by the Appellate Medical Board. It might be used for other purposes within mine legislation or safety regulations, but not for this specific function.

Option B: Form Q
Form Q is also not the correct form for the standards of medical re-examination by the Appellate Medical Board. Similar to Form P, it serves different regulatory needs within the mining industry.

Option C: Form R
Form R is not the appropriate form for the standards of medical re-examination by the Appellate Medical Board. It is used for other distinct purposes under mine legislation.

Option D: Form S
Form S is the correct form where the standards of the medical re-examination by the Appellate Medical Board are laid down. This form specifically outlines the procedures and criteria for medical evaluations conducted by the Appellate Medical Board.

Conclusion
The correct form is Form S because it is designated for laying down the standards of the medical re-examination by the Appellate Medical Board, ensuring compliance with mine legislation and general safety regulations.