Pinetree Line
RCAF Gap Fillers


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  1. Progress Chart: Surveys in Northwestern Ontario - 31 December 1959.
    Courtesy National Archives of Canada.

  2. Progress Statement #3 - 31 December 1959.
    Courtesy National Archives of Canada.

  3. Preliminary Cost Estimates: Gap Filler Radar Stations - 18 December 1959.
    Courtesy National Archives of Canada.

  4. Gap Filler Radar Stations - 18 December 1959.
    Courtesy National Archives of Canada.

  5. Cost Estimates - 18 December 1959.
    Courtesy National Archives of Canada.

  6. Gap Filler Program - 16 December 1959.
    Courtesy National Archives of Canada.

  7. Progress Statement: Gap Filler Radar Stations Southern Ontario - 2 December 1959.
    Courtesy National Archives of Canada.

  8. Progress Statement Appendix "A": Gap Filler Radar Stations in Southern Ontario - 2 December 1959.
    Courtesy National Archives of Canada.

  9. Siting Instruction Plans: Gap Filler Radar Stations Eastern Quebec - 2 December 1959.
    Courtesy National Archives of Canada.

  10. Gap Filler Radar Layout in Armco Building - 2 December 1959.
    Courtesy National Archives of Canada.

  11. Sketch of Armco building - 2 December 1963.
    Courtesy National Archives of Canada.

  12. Tower Detection System - 1 December 1959.
    Courtesy National Archives of Canada.

  13. Progress Statement #2 - 30 November 1959.
    Courtesy National Archives of Canada.

  14. Gap Filler Radar Stations: Radar Buildings Using Armco Products - 30 November 1959.
    Courtesy National Archives of Canada.

  15. Gap Filler Radar Stations - 26 November 1959.
    Courtesy National Archives of Canada.

  16. Delay in Completion of Drawings - 26 November 1959.
    Courtesy National Archives of Canada.

  17. Field Survey Requirements - 19 November 1959.
    Courtesy National Archives of Canada.

  18. Field Survey: Gap Filler Radar Stations Northwestern Ontario - 17 November 1959.
    Courtesy National Archives of Canada.

  19. Progress Report No. 3: Maritime Gap Filler Stations - 15 November 1959.
    Courtesy National Archives of Canada.

  20. Gap Filler Construction Programme - 13 November 1959.
    Courtesy National Archives of Canada.

  21. Gap Filler Facilities - 13 November 1959.
    Courtesy National Archives of Canada.

  22. Progress Chart: Surveys in Northwestern Ontario - 13 November 1959.
    Courtesy National Archives of Canada.

  23. Evaluation and Approval of Siting Reports - 4 November 1959.
    Courtesy National Archives of Canada.

  24. Revised Standard Specifications for Drawings - 29 October 1959.
    Courtesy National Archives of Canada.

  25. Land Surveys - 27 October 1959.
    Courtesy National Archives of Canada.

  26. Western Gap Fillers: Siting - 27 October 1959.
    Courtesy National Archives of Canada.

  27. Standard Building Design: Gap Filler Radar Stations - 23 October 1959.
    Courtesy National Archives of Canada.

  28. Design Analysis of Gap Filler Towers - 23 October 1959.
    Courtesy National Archives of Canada.

  29. Gap Filler Radar Stations - 19 October 1959.
    Courtesy National Archives of Canada.

  30. Field Surveys - 16 October 1959.
    Courtesy National Archives of Canada.

  31. Western Plains Gap Filler Radar Stations - 16 October 1959.
    Courtesy National Archives of Canada.

  32. Gap Filler Stations: Engineering Services Western Quebec - 16 October 1959.
    Courtesy National Archives of Canada.

  33. Progress Statement No. 1: Gap Filler Radar Stations Southern Ontario - 15 October 1959.
    Courtesy National Archives of Canada.

  34. Progress Statement: Gap Filler Radar Stations Southern Ontario - 15 October 1959.
    Courtesy National Archives of Canada.

  35. Gap Filler Radar Stations: Western Quebec - 15 October 1959.
    Courtesy National Archives of Canada.

  36. Reconnaissance Reports: Gap Filler Radar Ststions Southern Ontario - 14 October 1959.
    Courtesy National Archives of Canada.

  37. Transfer of Land - 9 October 1959.
    Courtesy National Archives of Canada.

  38. Radar Gap Fillers: CADIN Extension - 9 October 1959.
    Courtesy National Archives of Canada.

  39. Radar Gap Fillers: CADIN Extension - 8 October 1959.
    Courtesy National Archives of Canada.

  40. Gap Filler Radar Stations: Northwestern Ontario - 8 October 1959.
    Courtesy National Archives of Canada.

  41. Western Radar Gap Fillers - 7 October 1959.
    Courtesy National Archives of Canada.

  42. Progress Report: Maritime Gap Filler Stations - 7 October 1959.
    Courtesy National Archives of Canada.

  43. Radar Gap Fillers: CADIN Extension - 7 October 1959.
    Courtesy National Archives of Canada.

  44. General Instructions: Gap Filler Radar Stations - 7 October 1959.
    Courtesy National Archives of Canada.

  45. Site Approvals: Gap Filler Radar Stations Southern Ontario - 7 October 1959.
    Courtesy National Archives of Canada.

  46. Standard Sheet Sizes: Gap Filler Radar Stations Northwestern Ontario - 7 October 1959.
    Courtesy National Archives of Canada.

  47. General Instructions: Gap Filler Radar Stations - 6 October 1959.
    Courtesy National Archives of Canada.

  48. General Instructions: Gap Filler Radar Stations Western Quebec - 5 October 1959.
    Courtesy National Archives of Canada.

  49. General Instructions: Gap Filler Radar Stations Eastern Quebec - 5 October 1959.
    Courtesy National Archives of Canada.

  50. General Instructions: Gap Filler Radar Stations Maritimes - 5 October 1959.
    Courtesy National Archives of Canada.

  51. General Instructions: Gap Filler Radar Stations Southern Ontario - 5 October 1959.
    Courtesy National Archives of Canada.

  52. General Instructions: Gap Filler Radar Stations Northeastern Ontario - 5 October 1959.
    Courtesy National Archives of Canada.

  53. General Instructions: Gap Filler Radar Stations Northwestern Ontario - 5 October 1959.
    Courtesy National Archives of Canada.

  54. General Instructions Appendix "A": Gap Filler Radar Stations - 5 October 1959.
    Courtesy National Archives of Canada.

  55. Gap Filler Survey in Western Canada - 2 October 1959.
    Courtesy National Archives of Canada.

  56. Scaffolding for Tower - 2 October 1959.
    Courtesy National Archives of Canada.

  57. Radar Gap Fillers: CADIN Extension - 2 October 1959.
    Courtesy National Archives of Canada.

  58. Radar Gap Fillers: Task Organization - 2 October 1959.
    Courtesy National Archives of Canada.

  59. Gap Filler Radar Stations - 2 October 1959.
    Courtesy National Archives of Canada.

  60. Field Surveys: Gap Filler Stations - 1 October 1959.
    Courtesy National Archives of Canada.

  61. Gap Filler Radar Stations: Northwestern Ontario - 1 October 1959.
    Courtesy National Archives of Canada.

  62. Gap Filler Surveying in Western Canada - 30 September 1959.
    Courtesy National Archives of Canada.

  63. Standard Sheet Sizes: Gap Filler Radar Stations Southern Ontario - 25 September 1959.
    Courtesy National Archives of Canada.

  64. Preliminary Engineering Services - 24 September 1959.
    Courtesy National Archives of Canada.

  65. Communications Facilities: Gap Filler Radar Stations Northwestern Ontario - 22 September 1959.
    Courtesy National Archives of Canada.

  66. Field Surveys: Nova Scotia - 16 September 1959.
    Courtesy National Archives of Canada.

  67. Gap Filler Radar Stations: Northwestern Ontario - 15 September 1959.
    Courtesy National Archives of Canada.

  68. Statement of Services - 20 August 1959.
    Courtesy National Archives of Canada.

  69. Field Surveys: Gap Filler Radar Stations - 19 August 1959.
    Courtesy National Archives of Canada.

  70. Gap Filler Radar Stations: Field Surveys - 11 August 1959.
    Courtesy National Archives of Canada.

  71. Gap Filler Radar Stations: Western Quebec - 10 August 1959.
    Courtesy National Archives of Canada.

  72. Field Surveys: Gap Filler Radar Stations - 7 August 1959.
    Courtesy National Archives of Canada.

  73. Field Surveys: Gap Filler Radar Stations - 7 August 1959.
    Courtesy National Archives of Canada.

  74. Chart with weight, width & depth details - 1 August 1959.
    Courtesy National Archives of Canada.

  75. Field Surveys: Gap Filler Radar Stations - 31 July 1959.
    Courtesy National Archives of Canada.

  76. Preliminary Engineering Services: Gap Filler Radar Stations - 29 July 1959.
    Courtesy National Archives of Canada.

  77. Contract for Performance of Work. Page 1 of 2 - 29 July 1959.
    Courtesy National Archives of Canada.

  78. Contract for Performance of Work. Page 2 of 3 - 29 July 1959.
    Courtesy National Archives of Canada.

  79. Gap Filler Radar Stations: Permission for Field Survey - 28 July 1959.
    Courtesy National Archives of Canada.

  80. Field Study & Soil Investigations - 28 July 1959.
    Courtesy National Archives of Canada.

  81. Field Survey Requirements: Gap Filler Radar Stations - 24 July 1959.
    Courtesy National Archives of Canada.

  82. Field Study & Soil Investigation - 24 July 1959.
    Courtesy National Archives of Canada.

  83. Site Listing & Detail - 24 July 1959.
    Courtesy National Archives of Canada.

  84. Triangulation Stations & Trigonometric Levelling - 24 July 1959.
    Courtesy National Archives of Canada.

  85. Triangulation Stations & Trigonometric Levelling - 22 July 1959.
    Courtesy National Archives of Canada.

  86. Department of Lands and Forests - 22 July 1959.
    Courtesy National Archives of Canada.

  87. Gap Filler Radar Stations: Building & Communications Requirements - 21 July 1959.
    Courtesy National Archives of Canada.

  88. Statement of Services - 20 July 1959.
    Courtesy National Archives of Canada.

  89. Field Surveys: Gap Filler Radar Stations - 17 July 1959.
    Courtesy National Archives of Canada.

  90. Field Surveys: Gap Filler Radar Stations - 16 July 1959.
    Courtesy National Archives of Canada.

  91. Field Surveys: Gap Filler Radar Stations - 14 July 1959.
    Courtesy National Archives of Canada.

  92. Proposed Gap Filler Radar Stations - 14 July 1959.
    Courtesy National Archives of Canada.

  93. Field Study & Soil Investigation - 13 July 1959.
    Courtesy National Archives of Canada.

  94. Gap Filler Radar Stations: Eastern Quebec - 13 July 1959.
    Courtesy National Archives of Canada.

  95. Field Survey & Soil Investigations - 10 July 1959.
    Courtesy National Archives of Canada.

  96. Field Surveys: Gap Filler Radar Stations Ontario - 3 July 1959.
    Courtesy National Archives of Canada.

  97. Construction & Engineering - 1 July 1959.
    Courtesy National Archives of Canada.

  98. Estimate: Gap Filler Radar Sites Maritimes - 25 June 1959.
    Courtesy National Archives of Canada.

  99. Field Surveys: Gap Filler Radar Stations - 24 June 1959.
    Courtesy National Archives of Canada.

  100. Field Surveys: Gap Filler Radar Stations - 24 June 1959.
    Courtesy National Archives of Canada.

  101. Field Surveys: Gap Filler Radar Stations - 23 June 1959.
    Courtesy National Archives of Canada.

  102. Construction of Gap Filler Radar Stations - 19 June 1959.
    Courtesy National Archives of Canada.

  103. Gap Filler Radar (FPS-18) Interference - 15 June 1959.
    Courtesy National Archives of Canada.

  104. Construction & Engineering - 11 June 1959.
    Courtesy National Archives of Canada.

  105. Sites for Gap Filler Radar Stations - 11 June 1959.
    Courtesy National Archives of Canada.

  106. Field Surveys: Gap Filler Radar Stations Ontario - 10 June 1959.
    Courtesy National Archives of Canada.

  107. Forest Prevention Act - 10 June 1959.
    Courtesy National Archives of Canada.

  108. Work Permit - 9 June 1959.
    Courtesy National Archives of Canada.

  109. Field Survey & Soil Investigation - 19 May 1959.
    Courtesy National Archives of Canada.

  110. MCL Doppler Building Type I - 11 May 1959.
    Courtesy National Archives of Canada.

  111. Field Surveys: Gap Filler Radar Stations - 30 April 1959.
    Courtesy National Archives of Canada.

  112. Field Surveys: Gap Filler Radar Stations - 24 April 1959.
    Courtesy National Archives of Canada.

  113. Gap Filler Radar Stations - 23 April 1959.
    Courtesy National Archives of Canada.

  114. Gap Filler Radar Stations: Building & Tower Design Criteria - 21 April 1959.
    Courtesy National Archives of Canada.

  115. Gap Filler Radar Station: Field Survey - 20 April 1959.
    Courtesy National Archives of Canada.

  116. Gap Filler Detail - 20 April 1959.
    Courtesy National Archives of Canada.

  117. Gap Filler Detail - 20 April 1959.
    Courtesy National Archives of Canada.

  118. Gap Filler Detail - 20 April 1959.
    Courtesy National Archives of Canada.

  119. Gap Filler Radar Stations: Building & Tower Design Criteria - 7 April 1959.
    Courtesy National Archives of Canada.

  120. Appendix "A" to Building & Tower Design Criteria - 7 April 1959.
    Courtesy National Archives of Canada.

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Updated: March 6, 2005