19 without written authority and direct site supervision by archaeologists andIor representatives of the National Museum; (3) All anthropological re,searches, for the purpose of obtaining materials and data of cultural value and where the principal proponent is a foreign national, shall be undertaken only with the authority and under the supervision of the National Museum or the National Historical Institute. Anthropological research by Philippine nationals, especially members of the indigenous communities, shall be encouraged; (4) Archaeological or anthropological materials presmned as important cultural property shall be allowed to leave the country only upon proper evaluation and written permission of the National Muset\m or the National Historical Institute; (5) All explorations and excavations undertaken, wherein the caves, rock shelters and their vicinities may have been used in the prehistoric past by man either for habitation, rl1ligious and/or sacred and burial purposes all over the country, shall be under the direct jurisdiction and supervision of archaeologists andIor other experts of the National Musemn; (6) All mining activities inside caves, rock shelters and . any such other areas shall require a written permit and clearance from the National Museum. An appropriate prior inspection by representatives ofthe National Museum, funded by the company applying for a mining right, shall be required to ensure that no archaeological materials are present and destroyed; (7) Excavations in caves, rock shelters and other areas by laymen are prohibited by this Act, All earth-moving activities in these areas must have the proper permit and clearance from the National Museum and monitored by their representatives; (8) All treasure hunting permits and licenses shall be issued by the National Museum, which shall f9rmulate the rules and regulations to adequately control, regulate and monitor all applicants for such undertakings; and