IN THE year 1911, British authorities passed a law designed to save the lives of coal miners. Each mine was required to keep two canaries.
سَنَةَ ١٩١١ ،‏ أَقَرَّتِ ٱلسُّلُطَاتُ ٱلْبَرِيطَانِيَّةُ قَانُونًا يَهْدِفُ إِلَى إِنْقَاذِ حَيَاةِ عُمَّالِ مَنَاجِمِ ٱلْفَحْمِ .‏