विचितवस्त्रहस्तगुह्याः काञ्चनपृषतत्वष्टृतपनीयकारवो ध्मायकचरकपांसुधावकाः प्रविशेयुर्निष्कसेयुश्च ॥ कZ_०२.१३.३३ ॥
vicitavastrahastaguhyāḥ kāñcanapṛṣatatvaṣṭṛtapanīyakāravo dhmāyakacarakapāṃsudhāvakāḥ praviśeyur niṣkaseyuś ca
金工——处理斑点金者、金匠、制作 tapana(精炼金)者、炉风鼓吹者、轧制/拉丝者、洗尘者——进出皆须在搜检之后(衣物、双手及隐匿处)。
To close loopholes: each role has a different opportunity to conceal gold (on the body, in tools, in dust), so regulation names them explicitly for enforcement.
Workplace access control plus mandatory searches at entry/exit in high-value manufacturing (e.g., bullion refineries, semiconductor fabs).