埋蔵 まいぞう鉱量 こうりょうではありませんでした
maizōkōryōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 埋蔵鉱量

1. Was not a proven ore reserve.; Was not a confirmed mineral deposit.

Past/Perfective
Negative
Polite
Formal Register