Short answers, pulled from the story.
The Alkali Act 1863 addressed an industrial crisis caused by Leblanc alkali works discharging muriatic acid gas into the air. This legislation targeted gaseous hydrochloric acid specifically as it emerged from the Leblanc process to stop damage to crops and buildings.
Dr Robert Angus Smith became the first Chief Inspector under the Alkali Act 1874. He held statutory responsibility for setting and maintaining pollution standards throughout his tenure and reported directly to the Permanent Secretary of his department rather than local officials.
Section 19 stated the act would expire on the 1st of July 1868 unless renewed, but it remained in force until its final repeal. The Alkali Act 1863 was finally repealed by section 30 of the Environmental Protection Act 1990 which replaced all previous acts related to alkali works regulation.
From 1863 to 1872, the Board of Trade oversaw their work while the Local Government Board took charge from 1873 through 1918. Later transfers moved them to the Ministry of Health between 1919 and 1951 before administrative changes continued as the Ministry of Housing and Local Government assumed control from 1951 to 1970.
The original statute targeted gaseous hydrochloric acid specifically as it emerged from the Leblanc process. By the 1920s, responsibilities grew to include smoke, grit, dust, and fumes from major heavy industries under subsequent regulations like the Alkali, &c. Works Order 1958.