He spent much time in quarrying in old records.

他花了很多时间从旧记录中寻找资料。

Villagers in the Mexican state of Veracruz discovered the tablet sometime before 1999, while quarrying an ancient Olmec mound for road-building material.

在1999 年之前某时, 村民在墨西哥韦拉克鲁斯省发现了石板，当时为了路面建筑，挖掘一个古老的奥尔梅克丘冢进行采石。