1. Safety in working with Machinery, noticed by 23 June B.E. 2519
2. Safety in connection with electricity noticed by 8 March B.E. 2522
3. Safety in construction work relating to temporary lift for carriage of materials, noticed by 29 January B.E. 2524
4. Working safety in construction work relating to scaffolding, noticed by 6 May B.E. 2528
5. Safety in construction work Governing construction areas, noticed by 10 September B.E.2528
6. Safety When working with Cranes or Derricks, noticed by 17 April B.E. 2530
7. Safety in Performing work related with piling, noticed by 8 August B.E. 2533
8. Work safety in sites which have the Dangers of Dropping from high places bounced materials, Falls and Collapses, noticed by 18 October B.E. 2534
1. Safety in working with Machinery, noticed by 23 June B.E. 25192. Safety in connection with electricity noticed by 8 March B.E. 25223. Safety in construction work relating to temporary lift for carriage of materials, noticed by 29 January B.E. 25244. Working safety in construction work relating to scaffolding, noticed by 6 May B.E. 25285. Safety in construction work Governing construction areas, noticed by 10 September B.E.25286. Safety When working with Cranes or Derricks, noticed by 17 April B.E. 25307. Safety in Performing work related with piling, noticed by 8 August B.E. 25338. Work safety in sites which have the Dangers of Dropping from high places bounced materials, Falls and Collapses, noticed by 18 October B.E. 2534
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