Name the ore of mercury. How is mercury extracted from its ore?

(N/A) The primary ore of mercury is $HgS$,known as Cinnabar.
Extraction process:
$1$. Roasting: The ore $HgS$ is first heated in the presence of excess air to convert it into mercuric oxide $(HgO)$.
$2HgS + 3O_2 \xrightarrow{\Delta} 2HgO + 2SO_2$
$2$. Reduction: Mercuric oxide $(HgO)$ is then reduced to metallic mercury $(Hg)$ by further heating,as it is unstable at high temperatures.
$2HgO \xrightarrow{\Delta} 2Hg + O_2$