The regulations for examination of qualification to excavate on archaeological sites Article 12

If there are any foreigners cooperating with domestic academic or professional institutions pursuant to the proviso of Article 52 of the Act, the principal excavator shall be a citizen of the Republic of China.The principal excavator shall submit the letter of intent to the central competent authority and apply for permission.If the above application involves the excavation of archaeological site designated by the municipality, county or city government, it shall be submitted to the competent authority pursuant to Article 3 of the Regulations.The artifacts and the raw data shall be conserved and stay in the R.O.C.; however, this does not apply to artifacts in need of experimental analysis with the approval of the central competent authority.
中文原文 考古遺址發掘資格條件審查辦法第12條
外國人依本法第五十二條但書規定,與國內學術或專業機構合作者,應由本國人擔任主持人。
前項主持人應檢附雙方合作意向書,向中央主管機關申請許可。
前項申請涉及發掘直轄市定、縣(市)定考古遺址者,應先依第三條規定送主管機關辦理。
發掘之出土遺物等原始資料應妥善維護,並不得攜出國境。
但有攜至國外進行實驗分析之必要,經中央主管機關核准者,不在此限。

English translation for reference only; the Chinese text prevails. Not legal advice.